Use the menu button "New user" to open the "User settings" dialog.
Is your xperttimer.exe located on a network drive, the easiest way to add the user to the database is by starting the program for their computer. Xpert-Timer recognizes the new Windows Name and adds a new user with minimum access rights to the database. The next step for you is to grant all necessary access rights and assign the right group to the user.
If you add the user manually to the system, make sure you enter the correct Windows user name in the User name field of Xpert-Timer, so that the user is recognized, when logging into the system.