Your users are your employees. These can be engineers, office staff, managers etc. You can decide which devices you want your employees to be able to access.
How to edit user status
First, open your company settings. Click into 'Users'.
You will see a page with all of your active users. It shows their username, the last time they logged in etc. Click 'View' next to the user you want to edit.
You will see a page where you can see all information related to this user. Click 'Edit login details' in the top right of the login details section.
Click in the box next to Status and select an option from the dropdown list. Click 'Save'.
In order to change or edit your user access, you can simply select the appropriate access level from the 'User access' dropdown menu (above).