It's not just wallet choice. For an existing, compliant org, accounting is even more important and non-optional. So it can become really complicated, really fast.
What helps is if you've done this yourself or have helped someone else doing it prior, in a setting similar to those you're advising. Personally, I don't know enough of the administration of German registered associations (that's the e.V. in their legal name) to advice in detail, but this is a common form, so I expect there to be people that know.
It's not just wallet choice. For an existing, compliant org, accounting is even more important and non-optional. So it can become really complicated, really fast.
What helps is if you've done this yourself or have helped someone else doing it prior, in a setting similar to those you're advising. Personally, I don't know enough of the administration of German registered associations (that's the
e.V.in their legal name) to advice in detail, but this is a common form, so I expect there to be people that know.