What is the pricing group?

All the details of this option

When you go to the Memberships List tab on the left in your main menu, there is a section titled "Manage membership groups"

How does it work ?

All memberships assigned to this group will be available for purchase between the dates you define.

What is the goal?

It's a quick and easy way to increase your rates.
In addition, you keep the information of your old memberships in the system.