Nothing can be more frustrating than trying to find the rest of the group when you are out in the back country. There are two methods that can be employed under such conditions. The first method is to leave someone from one group to wait for the second group. That is not always very fun, so a better alternative is to employ technology.
If you have FRS radios you can stay in touch with one another by using the radio. While it would be nice if everyone in the group had an FRS radio there should be at least one FRS radio in each of the aforementioned riding “pods”. That way the various groups can find each other more quickly or call for help when needed.