We use Dwservice as our remote screen sharing support tool. It works on both Windows and Mac.

Please download the software here: https://www.dwservice.net/en/download.html 

  • Once downloaded, run the software. Select "Install" and click next.
  • Keep the default for the install path, select "Yes" click next
  • When prompted to configure the agent, select "Enter the installation code" and enter the code given to you by the tech support agent. 
  • click Next and Finish

Post install MacOS instructions: