Thank you for your reply. I have a Level 5 character (we play as a Group of four with 4 custom characters).

I am - or rather want to - play a sorcerer warlock multiclass because i want the Short Rest spell slots to refill my sorcery points. But i cannot choose which slots i want to use for what Action, which defeats the purpose of this multiclass. I have to use up the long Rest slots first. Sorlock or sorcadins are a very popular multiclass in tabletop dnd, beca se of the usage of the warlock Short Rest slots,which cannot be played to the potential that is usually qccepted by dms and Not disallowed by RAW