Correct display of objects in Asset fields

[Fariz Aliverdiyev]

Good day.
Please, help set up the correct display of objects in Asset fields.
How object types look like in the Asset diagram:

How the object types look like individually:

I created 3 Asset fields: Category, Sub-category and Process.

The relations between Category and Sub-category are set up correctly. But I need to connect Process field to them according to the logic from the screenshots above. 

So, if Category 1 object is selected from Category field and no Sub-category selected - then in Process field Process 1 and Process 1.1. must show up. And if Sub-category is selected and its value is Sub-category 1 then Process 1.2. must show up. 

Is this possible? Thank you in advance.