Missing option on charge cards: Only use selected cards/providers for charge planning

I’m struggling with the selection of charging providers. Do I miss an existing option?
I can enter all my charge cards. I know the following option is available: "Plan a route preferring chargers that are supported by my cards"

When I select this option, the planner takes into account all providers where I can pay with any of my added charge cards.
These are chargers from either a) my 'own' networks or b) from other networks that accept one of my entered charge cards for payment.

This is nice, but it's not exactly what I need. It's not "strict" enough. The route planner should try to plan a route using ONLY chargers from the providers I've entered (so "Part a" only). Chargers from other providers should NOT be taken into account, even if they accept my cards for payment (so just exclude "Part b"). I simply only want to use "my own" provides, no others at all.