You can only have one set of seasons. These apply to all bookings in the system.
You can however have a unlimited number of seasons - see example below.
Season A 1st November to 15th November
Season B 15th November to 1st December
Season C 1st December to 15th December
Season D 15th December to 30th December
In this example for non Agent Bookings you may have the same rates for Seasons A and B and C but in the Agents Rates area you could have different rates for Seasons A , B and C.
Note that your seasons must be unique and not overlap.
For more details, see the
Seasons article