You can access the Desktop version of Schoolcomms either via the Desktop Icon:
Or if your SIMS is hosted you would access Schoolcomms via the focus menus in SIMS.
The multi-user at the school can reset a Schoolcomms users Memorable Data and Password, unlock a user and edit the email connected to the account.
This would be actioned in Manage Users via the Web version.
Click on the user, then click on edit and edit as required