Clarify how user search works

docs/how-to-guides/new-user-guides/add-users-to-projects.md

@@ -31,6 +31,14 @@ Following project creation, you can add users as project members so that they ca
 1. In the **Members** tab, click **Add**.
 1. Search for the user or group that you want to add to the project.
 
+    :::note Notes:
+
+    - At least 2 characters must be typed in the search box for results to appear
+    - Users can be searched based on their username or display name
+    - Search is prefix-based (eg. a user named `Stan Dard` will appear when searching for `Sta`, but not when searching for `Dar`) and case-sensitive
+
+    :::
+
     If external authentication is configured:
 
     -  Rancher returns users from your external authentication source as you type.
@@ -63,4 +71,4 @@ Following project creation, you can add users as project members so that they ca
 **Result:** The chosen users are added to the project.
 
 - To revoke project membership, select the user and click **Delete**. This action deletes membership, not the user.
-- To modify a user's roles in the project, delete them from the project, and then re-add them with modified roles.
+- To modify a user's roles in the project, delete them from the project, and then re-add them with modified roles.

docs/how-to-guides/new-user-guides/manage-clusters/access-clusters/add-users-to-clusters.md

@@ -33,6 +33,14 @@ Cluster administrators can edit the membership for a cluster, controlling which
 1. In the **Member Roles** tab, click **Add Member**.
 1. Search for the user or group that you want to add to the cluster.
 
+    :::note Notes:
+
+    - At least 2 characters must be typed in the search box for results to appear
+    - Users can be searched based on their username or display name
+    - Search is prefix-based (eg. a user named `Stan Dard` will appear when searching for `Sta`, but not when searching for `Dar`) and case-sensitive
+
+    :::
+
     If external authentication is configured:
 
     - Rancher returns users from your [external authentication](../../authentication-permissions-and-global-configuration/authentication-config/authentication-config.md) source as you type.

docs/how-to-guides/new-user-guides/manage-clusters/projects-and-namespaces.md

@@ -168,7 +168,15 @@ By default, your user is added as the project `Owner`.
 To add members:
 
 1. In the **Members** tab, click **Add**.
-1. From the **Select Member** field, search for a user or group that you want to assign project access. Note: You can only search for groups if external authentication is enabled.
+1. From the **Select Member** field, search for a user or group that you want to assign project access. You can only search for groups if external authentication is enabled.
+
+    :::note Notes:
+
+    - At least 2 characters must be typed in the search box for results to appear
+    - Users can be searched based on their username or display name
+    - Search is prefix-based (eg. a user named `Stan Dard` will appear when searching for `Sta`, but not when searching for `Dar`) and case-sensitive
+
+    :::
 1. In the **Project Permissions** section, choose a role. For more information, refer to the [documentation on project roles.](../authentication-permissions-and-global-configuration/manage-role-based-access-control-rbac/cluster-and-project-roles.md)
 
 ### 4. Optional: Add Resource Quotas