Groups of skydivers need to navigate through the air, doing a jump to get into a formation. How can skydiver who are below the formation join the group?

Skydivers who are below the formation can join the group by following a predetermined flight path and speed that will allow them to catch up to the formation. They can also communicate with the group to coordinate their movements and ensure they join the formation safely. Additionally, the skydivers in the formation can adjust their speed and trajectory to make it easier for the skydivers below to catch up and join the group. Practice, communication, and coordination are key to successfully joining a skydiving formation from below.