Hey Martín,
We have a tutorial that shows how to use the paid-plans API to set up your own custom plan ordering.
Corvid Tutorial: Using the Paid Plans API for Pricing Plan Ordering and Payment
You should also check out this article to learn more about using multi state boxes with Corvid.
Corvid Tutorial: Working with Multi-State Boxes and Code
If you have already tried this tutorial but you feel like you’re having difficulty implementing this feature, please consider hiring a Wix Partner to help you build your site.
Hope this helps!
Dara | Corvid Team