Access settings are where you, as an Admin, will control what other Searchlight users will be able to see. You will also be able to add new users.
Adding new users:
To add a new user, you will log into Searchlight and go to Access Settings
Then click on + Invite User
Enter in the email address of the user you would like to add and click invite.
This will send an invite directly to your user to log into Searchlight.