Is it possible for user to have multiple membership plans

Hello,

Is it possible for user to have multiple membership plans and access them all at once? For example plan A gives access to one url with content, but user want to access page XYZ but if you want to access XYZ you must buy plan B and is it possible to keep both of them?

And other question would be if it's possible to change /memberships/ design for selling membership in easy way?