Go to Back Office > Persons, create a profile for the person by clicking on +.
Go to Configuration > Staff and resources > Staff
Click on “Add staff from persons” > find the person and press “Select”
The person is now marked as staff and you will be taken to the person’s profile. Go to the “Staff” tab and add a role based on the rights the person should have.
Go to the "Person" tab and press "Send new password". Your staff will then get an email with instructions on choosing a password to log in to BRP. Their log in credentials will then be the email on their profile and the password they choose.