How to: Create new subdocuments in a master document.
Solution:
Display the master document, type the heading where desired, and select the heading. Click 'Create Subdocument' from the toolbar.
1) Open the master document.
2) Select the 'View' menu and select 'Master Document'.
3) Position the insertion point where the document is to be inserted. (NOTE: DO NOT insert into a subdocument.)
4) Type additional heading.
5) Select the heading just typed.
6) Click on the 'Create Subdocument' on the Master Document toolbar.
Create Subdocument button