Inviting another user in the onboarding process:
On any onboarding page, click Invite another User, in the top right of the screen.
The Invite another user modal appears
Enter the user's email address
Click Save. The user will receive an email with a link to accept the invitation
Inviting another user from the dashboard:
Click on your organisation name on the top left of the screen and click Manage.
In the organisation settings page, navigate on the left toolbar to Members
Click Invite and enter the user's email address.