ᐅ Retrofit catches on lightweight metal windows

Hello everyone,

I would like to retrofit snappers on the outside of my windows and doors. However, I only find explanations where the sleeve is mounted using an existing screw. My doors do not have any such screws. Is the sleeve simply drilled into the moving metal profile, or which type of snapper do I need here? I have attached a few pictures for reference. The parts are from brands like Heroal and Sigenia.

Thank you in advance!