End users can see the view import User, all users inside this view and they can click on Import Users button.
UPDATE: To be addressed in a future release.
This button will display to all users, but the "Import All" and "Import Selected" actions will not be displayed to the end users as long as the ACL 'Admin' Role is not assigned to any end user. The Default ACL entry should be set to editor.
The main action button cannot be hidden with a formula.
The "Import Users from Excel" action is missing the formula to hide from end users.
Open the SSAM database in Domino Designer
Go to the 'View' view
Open the 'Users by Status' view
Expand the View Actions on the right side pane
Expand the 'Import Users' view action button
Right click on the 'Import Selected Users from Excel' view action button, and select 'Action Properties'
Click on the second tab (shade)
Check the 'Hide action if formula is true' box
Enter the following code: !@Contains(@UserRoles;"[Admin]")
Save and Close the view