Forms - Add button to Custom Form

Summary

Forms - Add button to Custom Form

Content

Hello Experts,

I am using for the first time Forms & Plugins. I created one custom form(not plugin) and also included it into a User Type. 

Whenever the user submits the specific custom Form , I need a notification to be triggered like "Service Request is created". But in this case, my form cannot be linked with any action button.

I believe this is a core functionality which actually existed as "Action Management" during the previous version.

Any ideas about how it can work now?

Thank you, 
Maria 

Version

19A