How do I sync the agenda calendar with my work calendar like that I can write in the agenda calendar and it will go onto my work calendar vice versa
The workflow/idea in Agenda is that you link your notes to your calendar events. Your notes themselves are not synced with the “notes” section of your calendar events though (if that is what you mean). For that there are too many privacy considerations (events with invitees, shared calendars, etc) and also the notes field in your calendar doesn’t allow for rich text notes so things would get lost. Instead the idea is that you link your Agenda notes to the events already in your Calendar app. Agenda will insert a link in the calendar event that makes it easy to jump from your calendar to the corresponding note in Agenda, and vice versa it’s easy to go from Agenda back to the calendar.