Your questions leads me to believe that you are a driver that has an agreement with the owner of the truck that is leased to a carrier. If that is the case, you should now have, or very soon get, a written agreement signed by you and the owner. The agreemnt should include all of the monies you will receive, how it is computated and when you will receive it.
Generally speaking. A customer pays accessorial charges to the carrier for service like, inside delivery, lift gate use, hand loading, HAZMAT hauling. The carrier will take some of the money for brokering the service and give the remainder to the O/O; sometimes in the form of a flat rate, sometimes a percentage of the total charge. An owner/operator will give some or all of these accessorial fees to the driver. It would depend on the agreement you have with the owner. If you agreed to 60% of the total, your owner may be keeping 40% of the accessory charges.