How do you swap engines and Winglets on the A320?

I am just wondering how do you swap the engines and Winglets on the A320 family aircraft as there no button to swap them

I think this will only be activated later. have not found a function

Unfortunately it’s not possible to do so now

You can’t yet, they said in future updates they will add a system allowing you to

Ahh I now get It thanks everyone for there reply

Any you see right now I believe are on a rotational basis with each flight

No I’m not talking about contract 320, I’m talking about player 320s