Vielen Dank
Yes the base is in Zürich and you MUST have an address in Switzerland in order to get a "working pass" that enables you to work for a swiss company like Swiss. And they don't pay your transport when you come to their selection day, neither your accomodation while you assess the training (that takes place in Zürich) because you're supposed to live there already .
But during the training (that lasts 4 weeks) you are paid => your salary like you were already working as a CCM
Who are you gonna work for (as a CCM) this time ?
Tschü-üß !