From the Settings menu, click Users
Click to Create new user
Enter the user's Name and Email. If they need to reset their password, this is the email address that will be used.
Their username, along with the property ID (found under the property name at the top of the menu), and their password will be used for logging in. You'll need to decide what user role to assign this person. Privileges decrease from Owner, Manager, Supervisor, to Reception, with Housekeeping & Web Developer only having access to their own relevant screens and no booking / payment / guest contact data.
Clicking Save will send an email where they can create their password and log in.
Here's a rough guide to what each User role can do.
Owner : Can do everything.
Manager : Can do most things, with the exception of changing account details.
Supervisor : Can't export many of the sensitive reports. Can't create new staff users. Can't assign rooms to room types. Can edit existing, but can't create, new promo codes.
Receptionist : Can view non sensitive items, but can't create or edit. Can create bookings & invoices.
Housekeeping : Can view & edit housekeeping screens only.
Web developer : Can view and edit web booking related screens only.