Is there a way to extend billing date more than 30 days in Max Classic?

Our members lost content for a short period, we want to extend the billing dates 2 months for a certain group of members. Can this be done in a batch? Currently, we can only extend billing date 30 days and I do not know how to do that for a group of people. Need help please

When you setup your subscription product you have the option to define the ‘cycle’ which in this case should be 60 days