SuiteCRM 8 custom button on editview

SuiteCRM 8 how to add custom button on editview?

There is just this bit of Documentation for the v8 front-end, still very incomplete:

On the other hand, SuiteCRM 8 tries to be backwards-compatible so it’s quite possible that, for those buttons in views, it respects the legacy data structures. Have you tried adding a button like you would on SuiteCRM v7? (I haven’t)

I tried add button like on v.7 but no effect :slight_smile: