To change the club used for a shot please follow these instructions:
1) Click on the club ID on the shot you wish to change.
2) From the drop down, click on the club ID that you would like to choose for that shot. This will update the shot with the newly chosen club.
If you only want to clubs that are assigned to a tag slot in MyBag (Active Clubs) then click on the slider beside 'Active Clubs' to activate this.