Turn Player Inventory Into Obelisk

Hi. I want to create a mod for my private server that will turn player inventory into an obelisk. So basically right now in an obelisk you can upload your character, summon bosses, upload dinos. I want the player default inventory to have all of these features, so like turning the obelisk into a player’s default inventory. Is that possible? I’m not very experienced with dev kit. Thanks for help.