In the Proton Calendar iOS app, we're stuck with a meagre accept and view option in the case of an invitation by someone. We can only accept an invitation and add it to the default calendar. This requires us to 1) remember to 2) use another device to put the invitation in the 'correct' calendar.

In the Proton Calendar webapp and in the (macOS) Proton Mail & Calendar app, I can couple an invite from someone else to any Calendar. This allows me to have a clear overview (different colors, different reminder settings) for both (different) clients and private meetings. I'm assuming that was a major reason behind this functionality.

Please add the described functionality to the iOS Calendar app. These options make the difference between time-saving and time-consuming.