If I have a recurring event (say every two weeks) in a Google Calendar, then in a Calendar app my Android phone I have the option to edit: "Only this event", "This and future events", or "All events".
But in Thunderbird on a PC, I only have the option to "Edit only this occurrence" or "Edit all occurrences".
I often need to shift all future fortnightly events forward by an extra week but leave all the previous ones in their original place.
Easy on Android, but how can I do it in Thunderbird please?