Drivers should not start the trip with missing drivers.
Unless the trip notes state to do otherwise, drivers should not start the trip with missing drivers. If the trip notes say to move forward with at least one chase and one hiker, then it is safe to continue with the trip. If the trip notes do not state detailed information or you still need more help, please do not proceed further in the trip without speaking to the trip's dispatcher.
DRAIVER recommends opening a ticket accordingly with Trip Support for help if you are unclear on how to proceed.