diff --git a/physionet-django/console/templates/console/event_management_manage_dataset.html b/physionet-django/console/templates/console/event_management_manage_dataset.html
index 6db04a7d52..91d6c7e647 100644
--- a/physionet-django/console/templates/console/event_management_manage_dataset.html
+++ b/physionet-django/console/templates/console/event_management_manage_dataset.html
@@ -4,6 +4,9 @@
     <ul class="list-group list-group-flush">
       <li class="list-group-item">
         <h5>Add a dataset to the event</h5>
+          <p>By adding a dataset, all participants (approved by {{ event.host.username }} or their cohosts) will be allowed to access this
+              dataset for the duration of the event (from {{ event.start_date }} to {{ event.end_date }}). There are currently {{ event.participants.count }} approved
+              participants in this event. Note that once a dataset is added to the event, the dates of the event cannot be changed.</p>
         <form action="" method="post" class="form-event-dataset">
           {% csrf_token %}
           {% include 'form_snippet.html' with form=event_dataset_form %}
diff --git a/physionet-django/console/views.py b/physionet-django/console/views.py
index f7cd7f4868..5ab6b1350c 100644
--- a/physionet-django/console/views.py
+++ b/physionet-django/console/views.py
@@ -3134,7 +3134,8 @@ def event_archive(request):
                    })
 
 
-@console_permission_required('user.view_all_events')
+@console_permission_required('event.add_event_dataset')
+@console_permission_required('event.view_all_events')
 def event_management(request, event_slug):
     """
     Admin page for managing an individual Event.
@@ -3172,7 +3173,7 @@ def event_management(request, event_slug):
 
             return redirect("event_management", event_slug=event_slug)
     else:
-        event_dataset_form = EventDatasetForm()
+        event_dataset_form = EventDatasetForm(user=request.user)
 
     participants = selected_event.participants.all()
     pending_applications = selected_event.applications.filter(
diff --git a/physionet-django/events/forms.py b/physionet-django/events/forms.py
index 6c304abfa7..dde1bc1611 100644
--- a/physionet-django/events/forms.py
+++ b/physionet-django/events/forms.py
@@ -3,6 +3,7 @@
 from events.widgets import DatePickerInput
 from events.models import Event, EventApplication, EventAgreement, EventDataset, CohostInvitation
 from project.models import PublishedProject
+from user.models import CredentialApplication
 
 INVITATION_CHOICES = (
     (1, 'Accept'),
@@ -72,7 +73,18 @@ class EventDatasetForm(forms.ModelForm):
     """
     A form for adding datasets to an event.
     """
-    dataset = forms.ModelChoiceField(queryset=PublishedProject.objects.all(),
+
+    def __init__(self, *args, **kwargs):
+        user = kwargs.pop('user')
+        super(EventDatasetForm, self).__init__(*args, **kwargs)
+
+        # Get the projects that the user is credentialed to access
+        projects = PublishedProject.objects.accessible_by(user, include_event_datasets=False)
+
+        # Update the queryset of the 'dataset' field
+        self.fields['dataset'].queryset = projects
+
+    dataset = forms.ModelChoiceField(queryset=PublishedProject.objects.none(),
                                      widget=forms.Select(attrs={'class': 'form-control'}))
 
     class Meta:
diff --git a/physionet-django/events/migrations/0010_alter_event_options.py b/physionet-django/events/migrations/0010_alter_event_options.py
new file mode 100644
index 0000000000..619353245b
--- /dev/null
+++ b/physionet-django/events/migrations/0010_alter_event_options.py
@@ -0,0 +1,23 @@
+# Generated by Django 4.2.11 on 2024-05-29 16:05
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("events", "0009_cohostinvitation"),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name="event",
+            options={
+                "permissions": [
+                    ("view_all_events", "Can view all events in the console"),
+                    ("view_event_menu", "Can view event menu in the navbar"),
+                    ("add_event_dataset", "Can add a dataset to an event"),
+                ]
+            },
+        ),
+    ]
diff --git a/physionet-django/events/models.py b/physionet-django/events/models.py
index 0842c97d36..c4ae99a6a8 100644
--- a/physionet-django/events/models.py
+++ b/physionet-django/events/models.py
@@ -29,7 +29,8 @@ class Event(models.Model):
     class Meta:
         unique_together = ('title', 'host')
         permissions = [('view_all_events', 'Can view all events in the console'),
-                       ('view_event_menu', 'Can view event menu in the navbar')]
+                       ('view_event_menu', 'Can view event menu in the navbar'),
+                       ('add_event_dataset', 'Can add a dataset to an event')]
 
     def save(self, *args, **kwargs):
         if not self.slug:
@@ -218,7 +219,8 @@ def is_accessible(self):
         if not self.is_active:
             return False
 
-        if timezone.now().date() > self.event.end_date:
+        if ((timezone.now().date() > self.event.end_date)
+                or (timezone.now().date() < self.event.start_date)):
             return False
         return True
 
diff --git a/physionet-django/events/templates/events/event_home.html b/physionet-django/events/templates/events/event_home.html
index 34488c14ba..2fda6ac019 100644
--- a/physionet-django/events/templates/events/event_home.html
+++ b/physionet-django/events/templates/events/event_home.html
@@ -82,13 +82,15 @@ <h3>{{ event.title }}</h3>
                 <small>Registration status: On waiting list</small><br>
             {% endif %}
 
-            {% if event.host == user %}
+            {% if user|can_view_participants:event %}
               <small>Share the class code: {{ url_prefix }}{% url 'event_detail' event.slug %} </small><br>
               </p>
               <button class="btn btn-sm btn-primary" data-toggle ="modal" data-target="#participants-modal-{{ event.id }}">View participants</button>
               <button class="btn btn-sm btn-primary" data-toggle ="modal" data-target="#pending_applications-modal-{{ event.id }}">Pending Applications</button>
               <button class="btn btn-sm btn-primary" data-toggle ="modal" data-target="#rejected_applications-modal-{{ event.id }}">Rejected Applications</button>
-              <button class="btn btn-sm btn-primary" data-toggle ="modal" data-target="#withdrawn_applications-modal-{{ event.id }}">Withdrawn Applications</button>              
+              <button class="btn btn-sm btn-primary" data-toggle ="modal" data-target="#withdrawn_applications-modal-{{ event.id }}">Withdrawn Applications</button>
+            {% endif %}
+            {% if user == event.host %}
               <a class="btn btn-sm btn-secondary"  href="{% url 'update_event' event.slug %}" data-form-url="{% url 'update_event' event.slug %}" >Edit Event</a>
             {% endif %}
 
diff --git a/physionet-django/events/templates/events/event_notifications.html b/physionet-django/events/templates/events/event_notifications.html
index d9305f7c01..5bbe690b2b 100644
--- a/physionet-django/events/templates/events/event_notifications.html
+++ b/physionet-django/events/templates/events/event_notifications.html
@@ -53,6 +53,26 @@ <h5 class="modal-title">Respond to participation request</h5>
                                     <div class="modal-body author_participation-response_form">
                                         <p>{{ participation_response_form.instance.user.get_full_name }} is requesting
                                             to join Event {{ participation_response_form.instance.event.title }}.</p>
+
+                                        {% if participation_response_form.instance.event.datasets.exists %}
+
+                                        <p>If a participant is approved to join this event, the participant will be
+                                            allowed to access the following datasets for the duration of the
+                                            event ({{ participation_response_form.instance.event.start_date }}
+                                            to {{ participation_response_form.instance.event.end_date }}):</p>
+
+                                        <ul>
+
+                                            {% for dataset in participation_response_form.instance.event.datasets.all %}
+                                                <li>{{ dataset.dataset.title }}</li>
+                                            {% endfor %}
+
+                                        </ul>
+
+                                        {% endif %}
+
+                                        <br>
+
                                         {{ participation_response_form }}
                                     </div>
 
diff --git a/physionet-django/events/templatetags/participation_status.py b/physionet-django/events/templatetags/participation_status.py
index d67bbfd797..f23a468f67 100644
--- a/physionet-django/events/templatetags/participation_status.py
+++ b/physionet-django/events/templatetags/participation_status.py
@@ -30,3 +30,11 @@ def has_access_to_event_dataset(user, dataset):
 @register.filter(name="get_applicant_info")
 def get_applicant_info(event_details, event_id):
     return event_details[event_id]
+
+
+@register.filter(name="can_view_participants")
+def can_view_participants(user, event):
+    # check if the user is a host or an event participant with is_cohost flag set to True
+    return event.host == user or event.participants.filter(
+        user=user, is_cohost=True
+    ).exists()
diff --git a/physionet-django/events/views.py b/physionet-django/events/views.py
index 6cb962511e..1f549d50db 100644
--- a/physionet-django/events/views.py
+++ b/physionet-django/events/views.py
@@ -22,9 +22,16 @@
 
 @login_required
 def update_event(request, event_slug, **kwargs):
+
     user = request.user
     can_change_event = user.has_perm('events.add_event')
     event = Event.objects.get(slug=event_slug)
+
+    # if the event has dataset added to it, it cannot be edited
+    if event.datasets.exists():
+        messages.error(request, "Event with datasets cannot be edited")
+        return redirect(reverse('event_detail', args=[event_slug]))
+
     if request.method == 'POST':
         event_form = AddEventForm(user=user, data=request.POST, instance=event)
         if event_form.is_valid():
@@ -109,6 +116,9 @@ def event_home(request):
 
     form_error = False
 
+    cohost_ids = EventParticipant.objects.filter(
+        user=user, is_cohost=True).values_list("event__id", flat=True)
+
     # handle notifications to join an event
     if request.method == "POST" and "participation_response" in request.POST.keys():
         formset = EventApplicationResponseFormSet(request.POST)
@@ -123,7 +133,13 @@ def event_home(request):
 
             event_application = form.save(commit=False)
             event = event_application.event
-            if event.host != user:
+            # if user is not a host or a participant with cohort status, they don't have permission to accept/reject
+            if not (
+                event.host == user
+                or EventParticipant.objects.filter(
+                    event=event, user=user, is_cohost=True
+                ).exists()
+            ):
                 messages.error(
                     request,
                     "You don't have permission to accept/reject this application",
@@ -226,16 +242,20 @@ def event_home(request):
             },
         ]
 
-    # get all participation requests for Active events where the current user is the host and the participants are
-    # waiting for a response
+    # making the query to get all the participation requests for the events
+    # where the user is the host or an event participant with cohort status
     participation_requests = EventApplication.objects.filter(
-        status=EventApplication.EventApplicationStatus.WAITLISTED
-    ).filter(event__host=user, event__end_date__gte=datetime.now())
+        Q(event__host=user) | Q(event__id__in=cohost_ids),
+        status=EventApplication.EventApplicationStatus.WAITLISTED,
+        event__end_date__gte=datetime.now(),
+    )
+
     participation_response_formset = EventApplicationResponseFormSet(
         queryset=participation_requests
     )
     invitation_response_formset = InvitationResponseFormSet(
         queryset=CohostInvitation.get_user_invitations(user))
+
     return render(
         request,
         "events/event_home.html",
diff --git a/physionet-django/project/managers/publishedproject.py b/physionet-django/project/managers/publishedproject.py
index 15c90794d7..55d2aadc08 100644
--- a/physionet-django/project/managers/publishedproject.py
+++ b/physionet-django/project/managers/publishedproject.py
@@ -8,7 +8,7 @@
 
 
 class PublishedProjectManager(Manager):
-    def accessible_by(self, user):
+    def accessible_by(self, user, include_event_datasets=True):
         """
         Return all published projects accessible by a specified user
         Part of the `hdn-research-environment` app contract
@@ -52,14 +52,15 @@ def accessible_by(self, user):
                 contributor_review_with_access | credentialed_with_dua_signed
             )
 
-        # add projects that are accessible through events
-        events_all = Event.objects.filter(Q(host=user) | Q(participants__user=user))
-        active_events = set(events_all.filter(end_date__gte=datetime.now()))
-        accessible_datasets = EventDataset.objects.filter(event__in=active_events, is_active=True)
-        accessible_projects_ids = []
-        for event_dataset in accessible_datasets:
-            if has_access_to_event_dataset(user, event_dataset):
-                accessible_projects_ids.append(event_dataset.dataset.id)
-        query |= Q(id__in=accessible_projects_ids)
+        if include_event_datasets:
+            # add projects that are accessible through events
+            events_all = Event.objects.filter(Q(host=user) | Q(participants__user=user))
+            active_events = set(events_all.filter(end_date__gte=datetime.now()))
+            accessible_datasets = EventDataset.objects.filter(event__in=active_events, is_active=True)
+            accessible_projects_ids = []
+            for event_dataset in accessible_datasets:
+                if has_access_to_event_dataset(user, event_dataset):
+                    accessible_projects_ids.append(event_dataset.dataset.id)
+            query |= Q(id__in=accessible_projects_ids)
 
         return self.filter(query).distinct()