The Super Admin of the organization account can invite employees of the same domain as the account domain defined in My Account settings. If your company (organization) has been acquired by another or your company domain has changed due to a rebranding, the organization domain can be updated to start adding employees with the new domain. Only the Super Admin of the organization can update the domain.
To invite a new user
Navigate to Admin Settings | Users Access Management > User Groups > User List.
If you are a monthly subscription user, you can also invite from Admin Settings | Users Access Management > Monthly User Groups > Users.
Click the Add User icon.
Select the Contact Type as Employee.
Only employees of the same domain as the account are allowed to add.
Enter User Email.
Make sure that the domain of the entered Email ID is the same as the account domain defined in My Account settings.
Click Submit.
You can see the invited user in the table along with the status.
On successful sign-up of the invited user, user will be added as an Employee. First signed-up user can assign the Super Admin role according to Assigning a Super Admin Role. The assigned Super Admin can also add or remove other Super Admins.