How can I make a drink and snack system for my Baristas to use?

Hi, I run a Café on ROBLOX but I need a drink and snack system for my Baristas. What I mean: The guest who wants to be served would provide a cup size, (Small, Medium or Large) and what they want. If they choose a milkshake, they can provide a flavour. If they choose coffee, they can provide which type. For example, if a guest wants a Small Strawberry Milkshake, the barista would click on the Small Cup, equip the Cup, push it into the "Strawberry Flavourings" and then the "cup" would be replaced with "Strawberry Flavourings". The Strawberry Flavourings in the cup would then need to be presented to the milk. Once done so, the Strawberry Flavourings would turn into "Strawberry Milk", finally, the Strawberry Milk would need to be pushed into the Mixer, replacing "Strawberry Milk" with "Strawberry Milkshake".

This is the same as a coffee. A Medium Coffee would be: Barista clicks on "Medium" cup, equips Cup, pushes the cup up to "Coffee Powder" and then the cup would be replaced with "Coffee Powder". The coffee powder would now need hot water from the kettle. Once presented to the kettle, the "Coffee Powder" would become "Hot Coffee Powder", and then the hot coffee powder is to be presented to the mixer, where it will become Coffee.

This is again, the same with other flavours/types. If it was a "Blueberry" milkshake, or "Cookie Dough" it would be the exact same process.

Now onto snacks, the snacks would be just a simple snack (on display) that the Barista can click to obtain and then give to the guest. (If they asked for a "Cookie", the Barista would click on the Cookie, equip it and use the "Hand To" tool (we have one) to give it to the guest)

Final ideas: Coffee Types: Frappe, Espresso, Coffee.. (I'm all out) Other Hot Drinks: Hot chocolate, (Wow, I'm not good at these ideas) Other Snacks/Foods: Sandwiches, Cookies, Muffins, Donuts, Cupcakes, Crisps/Chips. Other Accessories: Cherry, Whipped Cream. Milkshake Flavours: Strawberry, Chocolate, Vanilla, Blueberry, Cherry, Raspberry, Cookie Dough, Mint, Oreo, Velvet, Orange. Other Machines: Bin (hold item, walk up to bin to throw away item that is being held). (would be useful in the event that a mistake is made) Cold Drinks: Coke, Lucozade, Mountain Dew, Doctor Pepper, Fanta, Sprite.