How do I make an appointment schedule with fixed booking slots?

Start with the shape of the appointment, not the calendar controls. Write down:

1. The appointment length.
2. The days and time windows you are willing to offer.
3. Whether the same windows repeat, and on which dates they apply.
4. The gap you need between appointments, if any.
5. How many appointments you are willing to accept in one day.
6. How far in advance someone may book, and how close to the start time bookings may still be made.

These choices make a fixed-slot schedule predictable: people choose from the times you open, rather than proposing arbitrary times. Keep the first version simple; you can revise it after checking whether the offered slots suit your actual routine.

Treat the availability window as the boundary and the appointment duration as the size of each booking. For example, as a planning illustration only, suppose you want 30-minute appointments on Tuesdays from 10:00 a.m. to noon. That window can contain four consecutive half-hour slots if there is no buffer and the calendar offers them that way. If you add a 10-minute buffer, the usable pattern changes; check the actual generated times rather than assuming the last slot will remain available.

Before sharing, preview the schedule as if you were booking: confirm the first and last offered starts, the gap between appointments, and that no slot crosses your intended end time. The example is arithmetic, not a promise about how a particular calendar displays slots. In Google Calendar, appointment schedules include duration, dates and time zone, recurring availability, a scheduling window, optional buffer time, and a maximum daily booking count. [S1]

Use your written plan to fill in the relevant choices: appointment duration; date, time, and time zone; availability periods; and the booking window that controls how far ahead and how close to the appointment people can book. Add a buffer if you need a transition between bookings, and set a daily maximum if you want a cap. [S1]

Check access before relying on a particular option: Google’s guidance says some appointment-schedule features require an eligible Google Workspace or Google One subscription. It also says schedules are created on a computer in a supported browser, not in the Android or iOS Calendar app. [S1] The available source does not establish which plan you have, which features your account includes, or how your specific schedule will appear, so verify those in your account before announcing the slots.

Use this copyable planning note, replacing each bracketed item:

“Appointment: [name or purpose]. Length: [minutes]. Availability: [days and start–end times, with time zone]. Repeats: [dates or pattern]. Buffer: [minutes, or none]. Daily cap: [number, or none]. Booking window: [earliest people may book] to [latest people may book before the appointment]. Check: [reviewed sample slots and confirmed the last slot ends within my availability].”

Then enter those choices in the calendar, inspect the offered times, and make one adjustment at a time if they do not match the plan. Only share the schedule after checking its dates, time zone, and visible booking window. A planning note helps catch omissions, but it cannot confirm account eligibility or guarantee how a calendar will display every slot.