In the Create Portal, Edit Portal or Create Task page, click + Add a full access user or + Add a contributor.
Click + Create new user.
Enter the new user's Name andTitle / Position.
Enter a unique Email address for the new user.
The email address can't be edited, so make sure you enter the correct email address. Ideally this address should be the one they use to log into their own MYOB products, or an email address associated with a Google account.
If the client later wants to change the address they use to log in to their portal, you'll need to set them up as a new user, and remove the old user account from the portal. See Edit a client portal.
Select the status of the new user to be either Full access or Contributor, as required.