...
Open the “Sharing” preference panel and check the box next to “Screen Sharing.” Make sure that "Remote Management" is unchecked.
.
Uncheck all boxes except for Remote Management. Press the Remote Management box to check it (if it is not already). It may ask you to give access controls, if it does, check all the boxes in that pop-up window and hit OK.
Click “Computer Settings…” and make sure “VNC viewers may control screen with password” is checked as well as "Show Remote Management status in menu bar". Then enter a password to use. Please use between 4-8 characters and a combination of at least 1 uppercase letter, 1 lowercase letter, 1 symbol, and one number. Click OK.
Setting up the PC you will use to connect to your work Mac
...