You can complete tasks in bulk on the following pages:
the Orders page (order list page)
the Trips page
the Invoices page
Here you can find how to complete tasks in bulk.
Navigate to Orders / Trips / Invoices
Click on "Quick actions".
Click on the task you like to do.
Select per row if you want to do that tasks for that row
Save by clicking on the green button at the bottom of your screen.