Allow editing rights on an individual per event base for attendees

[JMoVS]

Is your feature request related to a problem? Please describe.

When scheduling an event, it is currently not possible as an invited attendee to edit the description or easily suggest or even move the event. Other calendaring solutions allow you to grant invitees the right to change and adjust events.

Describe the solution you'd like

Allow attendees on an event by event basis to edit the event, change the description or title and change time of the event.

Describe alternatives you've considered

using calendars with shared writing rights but that's not really feasible

Additional context

No response