You can create connections from one source object to multiple target objects in a single step.
Procedure
Click Symbols on the button bar if the bar is not activated yet.
Click Connection on the Symbols bar, or click the source object and then the Connection button on the mini toolbar.
Move the mouse pointer to the source object and click an anchor point.
Press the Ctrl key and hold it down.
Click the anchor points of the required target objects one after the other.
Release the Ctrl key when a connection has been created to all target objects.
The target objects are connected to the source object.