Looking for references to see UX Layout of creating a process

following UX practices, I've been creating process to achieve different functionalities.

But this time, I'm into a situation that I've to create a process that will be creating a custom process.

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The solution can be a "visit or step-by-step approach"

.i.e. User can

  • Create Phase.
  • Create Sub-phase.
  • Inside Sub-phase: Create forms, link them, set privileges and more.

I want to achieve

  • Visibility w.r.t keeping it single screen.
  • Keep drag & drop layout.

Please give a look to my rough draft, and suggest me some "keywords" or, a "reference" who's making a process.

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