TUTORIAL: https://www.youtube.com/watch?v=Xq68CSFlqDs
Skip to the 8:00 mark if you want to get straight to it. So the easiest way to do this is by using the Aftertaste and the Immolation Liquidation gumballs. So the first guy to get the Apothicon just has to make sure he picks it up as his third weapon. Then the other guy has to get his Fire Sale gumball, then the guy with the Apothicon can get Aftertaste. Then we have the guy with the Apothicon actually make sure it's in his third weapon slot as well by having the Apothicon out then cycling to the weapon after. Now you can pop the Fire Sales and have the guy with Apothicon down himself and you can start hitting the box! He can actually down himself twice per three Fire Sales. Now this is the easiest way as you get more box hits earlier on in the game, although you dont need the Fire Sale gumballs. If you wanted to go through the rounds and just hit the normal box without Fire Sales or I guess if you don't have any then either player can just use a gumballs that picks the player up with all his perks like Phoenix Up, Near Death Experience and possibly another one but I can't remember right now lol. Just a video proving that it is possible to get multiple Apothicon Servants in the map Revelations. Played with my homie xRUNIN N GUNINx on Xbox One and he's on Twitch, check him out!