Parallel services allow you to book two services with two different providers at the same time. When configuring parallel services, if you make a room available for parallel services, the parallel service appointments will always get booked in the room. To make a room available for parallel services, you should also associate the services to the room individually.
To configure rooms for parallel service sets
At the center level, go to Admin > Resources > Rooms.
Select the Available for Parallel Services check box.
In the Parallel service groups enabled for this room section, enter the parallel service group name.
Example: Mani Pedi Group.
After parallel services are configured, when guests book services that are part of the same parallel group, they will be assigned the same room, and these services can be done parallelly by two different providers.