This feature is interesting if an Action is a duplicate of another Action.
Log in to the HTML5 client.
Select the Actions Center workspace, Actions Grid.
Click on the Open button available on the right-hand side of the Action Name to open the Action Card.
In the Action Card, click on the Connections button to activate the Connections section.
In the Connections section, click on the Connect to Existing button and select the Action option.
In the Global Actions list, select an Action.
Actions are now connected to each other.