Pace works natively with Google Calendar: reads your week, writes the plan back when you say so
Sign in with Google, pick which calendars Pace can see, and it plans around them. When you want the plan in your calendar, Pace writes the sessions there, keeps them in step with the plan, and notices when you drag one.
Pace sees your events, with names and email addresses stripped before anything reaches the AI. You choose which calendars count: turn off holidays or a partner's calendar and they are ignored.
Save a plan, say "put it in my calendar" or press Add to calendar on a goal, and the plan's sessions land in your Google Calendar, marked as scheduled by Pacecal. Nothing is written until you ask.
Move a block in Google and the plan moves with it. Delete one and Pace treats it as a dropped session. Those moves are the signal the weekly review uses to decide whether to step your load up or hold it.
Work, personal and shared calendars all count for free time. The plan goes into one of them: the primary calendar of the first account you connected.