If the studio your a member of allows for you to transfer memberships, you'll see this as an option on your Memberships page.

From your customer account, if you click Memberships, you'll see this dropdown option to the right of the membership now includes 'Transfer Membership.'

A pop up will then allow you to choose which membership to transfer to on the next renewal. This pop up will display a warning that any incompatible bookings with the new membership will be cancelled.

In other words, on the next renewal, when the scheduled transfer occurs, if you happen to be booked into certain classes that are not included in that new membership, you'll be cancelled out of those classes automatically.