Where did you get the impression that you could have extra clubs? I don't see anything in the Pro Shop description even hinting at that fact.
Saving different configurations of clubs is valuable to many people. Someone who plays both CTTH and stroke play may find it convenient to save a configuration with a hybrid as their longest club and four optional wedges for CTTH and another configuration with driver, 3 wood and 3 wedges for stroke play. A configuration with a 3 wood as the driving club for one course and a driver for another.