Hello, is it possible to store two or more seed phrases on one coldcard device? I want to use this for creating a multi signature wallet
No, but you can have an unlimited number of wallets (accounts/addresses) that are all managed from one master's address.
But if you want to get several seeds, all you have to do is destroy the seed (make sure you keep the words) created a brand new wallet and so on, but you can manage one dooz at a time.