FYI : Unapproved users will be listed Under Units & Users Module who are waiting for the access to your ADDA. So as an Admin ensure that the unapproved users list is verified frequently.
Step 1: Login to ADDA -->> Admin -->> Units & Users -->> Unapproved.
Step 2: Click on the EDIT button and verify the user details. Once verified & validated you can approve the user.
Note: If Advanced Move In-Out tracker is setup, Please validate the user details from EDIT -->> ADVANCED
Step 3: Check Mark the Approve check-box and click on Approve Selected users button.
Once approved, the user will be informed via email automatically with a temporary password. You can check the user under approved users list.