Sorry for the long wait on a reply. Apparently, my email settings on this support board were not set up correctly.
You should be able to do the following:
- On the Admin menu (upper right corner), choose Folder and click Permissions.
- Click the Project Groups tab.
- Click the group name (Members for editing or Users for reading) to which you would like to add the new user.
- Click the Manage Group link (upper right)
- Enter email addresses, one per line, in the Add New Members edit box.
- Click the Update Group Membership button.
That should do it. The new user will be sent email notification that allows them to register on the site. Once registered and signed in, the user will have the permissions indicated by the group you chose.
Hope that helps.