View Permissions on a file in Outlook

1. Open Outlook and navigate to the file you want to check the permissions for.

2. Right-click on the file and select "Properties" from the context menu.

3. In the Properties window, go to the "Permissions" tab.

4. Here, you will see a list of users and groups that have access to the file, along with their permission levels. You can also add or remove users and groups and change their permission levels.

Additional tutorial here.