Got to the settings and select Office Users from the left
Click Add New
At the top, you will see General and Permissions
Fill out all of the starred info on the General tab
Go to the Permissions tab and give a view or edit access to each module as desired
Restrict vehicle visibility in the map module from the dropdown under Map Visibility for Vehicles
Make sure the user has a YES under the Permissions column of the list. If they do not, click the three dots on their line and select Activate. If you are unable to activate the user, be sure to check that you have Office User Licenses available; you may need to purchase additional licenses or deactivate one of the users with a YES under Permissions.