This is a block of time on a Service that extends the business hours past the normal operating time on a one-time basis.
For instance, Jimmy (the Service Owner) has a extra day off. Jimmy can add an extra day to his swim lesson availability (Service) for just that one extra day.
Can I book a resource?
No. If you have an object you reserve, rent, or signup for that is not used for anything else, simply make it a Service or Event.
For example, you have a BBQ grill. Simply make a Service called "BBQ Grill Reservation"
Why would I use resources?
To prevent double Bookings
If more than one service or event uses the same physical object or space. For example, you only have one tennis court but have multiple tennis instructors and have open play pickleball. Add the tennis court as a resource. If instructor Steve is having a lesson at 2pm, then nobody else can book the tennis court at 2pm. Your single tennis court will not get double booked.
To simplify your Services
If you have multiple of the same resource. For example, you have six tennis courts. You allow tennis court reservations during open play. Create six resources called: Tennis Court 1, Tennis Court 2, etc. Then create one service called: Tennis Court Reservation. Your members can reserve any of the six courts until they are all used up.
To use Events
To offer an Event, you must associate an event with a Resource.