Navigate to the trip you want to change the signature status on, and follow these steps:
Click on the Additional information (the blue i) icon for the trip.
Select the Signature Status from the drop down.
Save.
How to Change a Trip's Signature Status in RoutingBox Classic
A trip's Signature Status will be changed to Signed automatically when a signature is received from the RoutingBox Mobile application. However, Signature Status can also be changed manually.