PETG for supports

Hello,
I'm having trouble changing the support material to PETG in Creality Print. It only offers me the same material (PLA) as the part itself. Could someone please tell me how to do this? Thank you very much.

Add the two filaments and color. One is PLA the other PETG (or more if needed). Use the circled plus sign at top (see screenshot).

Then in settings go to supports and down to “filament for supports” and choose “support/raft interface” and choose PETG (see screenshot). Do not change the Support/Raft base to PETG (too many color/filament changes).