Go to the User Management area, reachable from the profile avatar dropdown menu.
Adding and inviting the user
Click Add User and enter their first and last name plus a valid email address. The email must be valid, because they receive an invitation that has to be accepted to activate the account.
Setting permissions
Admin Access grants the user access to all projects and all software features.
Limited Access lets you control which specific projects and features the user can reach. Users invited without Admin Access appear as Team Members.
Confirming access
The Role & Access column on the User Management table shows each user's role plus a count of the projects and features they can reach, so you can confirm the invite is set up correctly without opening their settings.
User Management is available on Team and Business plans.
Read the full article: How do I invite new users to my Workspace?