Note - This feature only works on RFA elements at this time.
The purpose of Quick Connect is to help you move elements to the connection of another.
Click on the "Quick Connect" tool from the ASC ribbon
Click on the element you wish to move
Click on the element you want to connect to.
You will see that the first element and any other elements connected to it have been moved and connected to the connection of the second.
Tip - Use Quick Connect to clean up disconnects in your pipe run.