I’m looking for a way to display alternative form of class [x] on a page.
Is there a default web part like “custom registration” or something else what can be used?
I do not believe there is an out of the box webpart for public use. You can check out the Edit Form control <cms:CMSForm>. Should allow you to assign your class and alt form info to it.
What version of Kentico are you on? I haven't published it to the marketplace, but a buddy of mine did create a ClassForm web part specifically for this purpose, i could send you the export for you to use.
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