It may be that you have particular class times that are busy and for that reason you might want to disallow certain membership prices and/or increase the drop in price.
Go to the 'Settings & Pricing' tab on a class type page and click Add Alternate Pricing.
Now set up your alternative pricing.
First select the times you want the alternate pricing to apply.
In this example the business owner no longer wants to allow 3 per week to be used for the peak class times i.e. Monday 7-8pm.
Anyone on an unlimited membership also pays an additional fee per class registration.
Once you set the changes, you will see a summary of your pricing changes.
As you can see from the below, '3 Per Week' can only be used for the default class pricing.