Automatic comboBox for every line in a multilevel list

[JDubs]

I set up a template with custom defined Multilevel Lists. The intent is so
that template users can add as many lines as they want at any level of the
multi level list with a universal style. I have saved the list as a style
which works well to accomplish the following:

I.
1.
2.
a.
3.
a.
b.
c.

I want a universal combo box to automatically become part of the list. It
will make a lable mandatory for each line in the list, like the following:

I. <comboBox>
1. <comboBox>
2. <comboBox>
a. <comboBox>
3. <comboBox>
a. <comboBox>
b. <comboBox>
c. <comboBox>

This capability mandates a user to label each line in the template from the
predefined combo box.

Any ideas?

 

[JDubs]

I take it that lack of replies that it is not possible.

Noone will take the challenge?