Welcome to Gearbox and Prestart!
There are a few simple steps you need to follow to get Prestart up and running within Gearbox.
Step one : First, you need to set up your Prestart users (drivers): http://www.gearbox.support/knowledge-base/adding-drivers-to-prestart-in-gearbox/
Step two : You will then need to create your Prestart checklists in Gearbox for your drivers to use: http://www.gearbox.support/knowledge-base/adding-prestart-checklists-in-gearbox/
Step three : You then need to attach the specific check list to the specific vehicle: http://www.gearbox.support/knowledge-base/prestart-checklist/
Step four : Once Prestart is linked, read over integration: http://www.gearbox.support/knowledge-base/prestart-integration/