ARRIS Timbuktu for Macintosh v8.8.3- Getting Started Guide - Manual (Page 90)

Getting Started with Timbuktu Pro for Macintosh | 90
After the remote user selects Guest and clicks OK, the connection is completed.
To specify Guest User privileges
1. From the Setup menu, choose Define Users.
The Define Users dialog box appears.
In the Define Users dialog box, you can edit settings for Guest Users, Ask For
Permission Users, and Registered Users.
2. Select Guest and click Edit.