In the Pikmin games, Pikmin are able to carry objects or living beings. When ordered to handle with an object that can be carried, a Pikmin will grab on to it. Further Pikmin can be issued to carry the same thing, at which point they'll grab a free spot on the object's perimeter to help carry. If it's too heavy, the Pikmin will just stand in place, periodically trying to pull it up, but once enough Pikmin grab onto the object, they will be able to carry it.
Depending on what is being carried, the Pikmin can either take it to the ship (or Pod) or an Onion. The Pikmin will follow one of several set paths (normally the shortest, unless it's unavailable) toward the destination. If the only path is blocked by a gate or a gap with a missing bridge, the Pikmin will start walking in a circle in front of the obstacle, waiting for it to be cleared.