Let’s start with the concepts:

• Minimum advance booking is related to early bookings. You will inform about the release, number of days prior to check-in, when the client can book a rate plan.
• Maximum advance booking is about last minute bookings. Configure the days prior to check-in when this rate plan is bookable.

From the Rate plan tab:

1. Create your rate plan.
2. Go to Conditions tab.
3. Include the minimum or maximum days depending on what type of rate plan you need (early booking or last minute).
4. Configure the type of price.
5. Map it with your PMS.