I have a couple of google calendars. How do I change Koalendar to link with a different calendar?
Koalendar syncs with your primary Google Calendar by default to prevent overbooking.
You can click on your profile then "Calendars" to select more calendars than just your primary one to sync with.
You can also select on which of those calendars, should the appointments be added (hover your mouse on a calendar and click on "make primary").