By default, Accompany syncs all of your primary calendars. You can turn the calendars Accompany displays on or off at any time.
Tap the color palette icon in the top left corner to bring up a list of calendars. Tap on each calendar's name or color icon to hide or show synced calendars.
On web, toggle the calendar drawer icon in the upper left of the page. Click the calendar's name or color icon to hide or show synced calendars.