Thank you Pianoleo!
My God is this confusing!!! Why can’t I just delete a page!
As you suggested I did a Right Click on the blank page 1 I had inserted and added text frames to turn into a title page (I have since made a Master Page title page and want to put it in the place of the one I created manually). I then removed the overrides on the first page as you suggested. The manually created title page went away but I ended up instead with two first pages of the music flow (which was disconcerting).
The very first page is the page 1 of the music score of my first flow (Its is a five movement piece) without any of my modifications (such as an inserted text frame I made for a dedication ). Then there is a needed blank page (which I had also inserted previously). Then there is the modified first page of the music of Flow I with the Text Frame for the special dedication which I had put in. That means there are now two page 1s of the first flow.
Weird! This result was disturbing…
I somehow get the impression that his result is because what I did previously was not at all the correct procedure. It was possibly just too ‘improvised’ on my part.
At this stage I am wondering if I should just remove all overrides and go back to square one and figure out how to do this properly (if there is a “properly” here). My impression is that I do not really understand at how the master pages work in page layout (I have looked at the videos, but am feeling more than a bit thick-headed right now).
What I need is a cover page for a big 75 page B4 score in five movements (five flows, each one with its own title) with a printed card cover that has a general title of the work on it. Then I need a second inside title page (with a black page in-between) that will go on regular paper. Then I need a blank page (or maybe not entirely blank as it could include contact info) and quite a lot of pages for text Front Matter which is there because of all the historical and cultural references I am making in the music (its a piece dedicated to Holocaust survivors whom I interviewed before I wrote the music).
I would also like a table of contents with page numbers because its a long five movement work.
Some of the pages of the Front Matter will also include inserted music frames with musical examples of some special scales surrounded by my text explanations. There will also be an explanation of ways to perform with some special, non-standard musical figures that must also be shown in a music frame. These figures are culturally unique; a Krechkt and an amazing kind of highly expressive oscillating Eastern European pitch bend.
So really this front matter is quite important.
I would just like to have the option to insert this material and then delete pages if I made a mistake in the layout or want two or three different versions with less or more text material. Right now I am confused as it seems I need to have a such clear idea of what I am doing with the Master Pages and how Dorico works before I attempt this somewhat more complicated kind of page layout (as you can tell I am feeling a bit stupid).
So given how very strange things now look with the two first pages of music flow, just a delete page command would have been quite nice!