There is an option on several pages which allow for mass updates for specific tasks. These can be found under the 'QUICK ACTIONS' drop down. The menu items available are specific to the page.
You can complete tasks in bulk on the following pages:
Orders List page
Quotes List page
Trips page
Invoices page (excluding Upload Purchase Invoices)
Summary to complete tasks:
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.