The map link is a feature to improve map management. Within a created map you can create links to other maps (Synoptic or Operational), thus facilitating navigation between them.
To create links you need to have two or more maps registered, when there is more than one map registered in addition to the one being used, they will appear in the list of maps as shown in the figure below:
Click and drag the object to the map as shown below:
When opening the map in the Surveillance Client, the icon on the screen will call the next map when clicked.