> ## Documentation Index > Fetch the complete documentation index at: https://docs.calgest.com/llms.txt > Use this file to discover all available pages before exploring further. # Group sessions > Classes and small-group training: one session, a number of places, several customers. A group session is one appointment that several customers attend, such as a yoga class for eight or small-group training for four. It has a number of places instead of a customer. Each person who takes a place is a participant, with their own status and their own messages. ## Making a service a group service **1. Open the appointment type** Go to **Appointment Types** and edit the service, or create a new one. **2. Turn on Group service** Switch on **Group service** and set **Places per session**, from 2 to 100. New sessions start with this many places; you can change them on each session. Group services are set up on the web. The mobile app shows them with a **Group** tag. Turning **Group service** off again makes the service one-to-one for new appointments; sessions that already exist stay sessions. ## Creating a session Create an appointment as usual and pick the group service. The form changes: the customer field goes away and a **Places** field takes its place, filled in with the service's default. Pick the time and staff, then save. A group service is always booked on its own; it can't share an appointment with other services. To run a class every week, turn on **Repeat** in the same form on the web. Every week is its own session with its own participant list, so people book each week separately. ## Participants Open the session to see who has a place. On the web the list is in the appointment form; in the mobile app it is on the appointment screen. * **Add participant** gives a customer a place. They get the same booking confirmation as for a one-to-one appointment, unless the session is already over. * **Remove** takes someone off. They get a cancellation message; nobody else is told. * **Accept** books a request that came from the booking page. Turning a request down frees the place and sends the booking-declined message. * Once the session has started, mark each person **Came** or **No-show**. **Undo** puts them back to booked. The places line shows how many are taken, such as **3 of 8 places taken**. A full session takes nobody else, staff included: remove someone first or raise the places. Places can't go below the number of people booked. A pending request from the booking page holds its place until you accept it or turn it down, so a class can't be overbooked while you decide. ## On the calendar A session shows its taken and total places on the calendar, for example **3/8**. The preview and the appointment show the same count. ## Changing or cancelling a session Edit the session like any appointment. When the time changes, every participant with a place, or a request waiting, gets the appointment-updated message. Cancelling the session sends a cancellation to everyone booked and the booking-declined message to anyone still waiting; their requests leave the Pending list. Changing only the number of places sends nothing. Deleting a session removes its participants without sending messages, the same as deleting a one-to-one appointment. Cancel it instead when people should hear about it. ## Reminders and aftercare Reminders go to each booked participant at the usual times. A person who joins after the reminder was planned still gets it, and a person who left doesn't. Aftercare goes to each participant who came, or who is still booked once the session is over. Each SMS is paid for the same way as for a one-to-one appointment. ## Customers and records A customer's page lists the sessions they took part in, with their own status: booked, came, no-show or cancelled. Their no-shows and visits count in the attendance summary. A customer's data export includes their places in sessions, and erasing a customer removes their places and keeps the sessions. In the insights, a session counts as one appointment, under its service, staff and hour. Participants are not counted separately there yet. ## Ask the assistant The assistant can create a session ("Create a yoga class on Tuesday at 18:00 with 10 places"), list sessions with their places, and add or remove a participant. Each of these waits for your confirmation. This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.