Side Head / Work Flow / Master Page confusion
Hello
,
I think I am not understanding a basic concept here with regards to work flows.
I have set-up a new Master Page in Document A that contains a Side Head and imported it into Document B.
When working with the new Master Page Document B I decided that the Side Head needed to be larger.
I go to a Master Page view and then choose Format > Page Layout > Column Layout... I get the following warning:

I click OK and get the following warning:

The Column Layout box appears and I can change the Side Head width but, as warned, only the Right Master Page is changed.
How do I change the imported Master Page and what concept am I not understanding?
