How to define a Dot Walked Form Field?

[G24]

Hello.  I'm confused. 

On our Requested Items, we have a field with label "Requested for".  Apparently the field name is "requested_for", as you can see here:

Yet this field somehow comes FROM the Request, one level up.  it seems to be a "dot walked" field.  How is this achieved?  I can't seem to define new fields which work this way.

When I go to Configure Form, I can see the Dot Walked notation:

But when I look at the dictionary definition of this field, I don't see any indication that it is a magical Dot Walked field which actually shows data from a different table.  See here:

How exactly do you go about defining one of these Dot Walked fields on a Form View?  I don't see how to do it either from the Table Definition or via Configure Form.  ServiceNow will not let me put a DOT in the field name.  Thanks.

[pablo_itguy_pl · Accepted solution]

1. Open your target form -> Configure -> Form Layout
2. Select reference field that you want to dot-walk into:
3. Click on "Expand selected reference field"
4. 
5. Find field you are looking for -> move it to "Selected" and if needed adjust placement
6. 
7. Save and validate your result
8. 

[G24]

Thank you, @pablo_itguy_pl .  Is there any way to do that via "Configure - Form Design".  Or I have to use "Layout".

(I never really use layout.)

[pablo_itguy_pl]

To be honest with you - this is the only way I was doing it 😉