Stop & Restart Tool

As you are Trunk Routing you can click the right mouse button to obtain the following menu:
 

Stop And Restart

This option when selected stops the Trunk Router at the point you selected the context menu.  You can then restart the Trunk Router at a new position using a single click of the left mouse button.  If Trunk End Router will then complete the routing between the two sections of Trunk if they are inside the target distance.  The example below shows Stop and Restart for a differential pair to get around a via:

Stop and Restart with Less

This option when selected stops the Trunk Router at the point you selected the context menu.  You will then see the dialog below.  Un-Ticking nets in the dialog will cause the Trunk Router to restart with only the remaining selected nets when you restart.