About: When granting a TeamViewer session to a partner, your Mac will most of the time only allow visual and not control to your partner (a Caldera tech in this case). To do so, please follow the procedures below.
Step 1: On the Mac, click on the Apple icon > Systems Preferences > Security & Privacy
Step 2: Privacy > Accessibility > click on the "Lock" icon to unlock > Select TeamViewer
Finish: Close the Security & Privacy window