You can select folders to not sync in your RightSync on your desktop. Please follow the steps below: 

  1. On your taskbar on the right, find the RightSync icon and right click on it. Select Show Synced Folders.
  2. You should be on the Advanced tab. Click on Selective Sync on the window. 
  3. You will see the main folders in the next window. Click on the arrow to the left of the main folder. This will expand out any synced folders you have under that main folder.

  4. Uncheck the box(es) of the folder(s) that you want to exclude from syncing to your local PC.

  5. Select OK and then Apply on the next screen and then OK to close the application.