Setting up an event in Proton Calendar can be a bit time consuming.
Instead, it would be neat if you could just copy paste a screenshot into the "description" field or even adding an "attachment" field.

The issue may be longer sync times, because more data has to be moved. Reaching the MB limit of the account could also become an issue.

Thus, if this feature would be added, I'd also like the feature: "Delete attachments from calendar entries in the past" --> "Yes", "No".