Hi @pambaau, @karmalakas , thank you both for your comments.
Firstly I want to make it clear, I am not a professional developer, but someone who is looking to learn and full understand grav,
All the comments are fair comments and all need to be tackled. I just know that joejac wanted to try and achieve something as a start place, the original question was one of those questions where someone just needed to work differently.
Yep, ok its clear that I need to create a inherited theme before doing any changes, which I will look in to doing.
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Yep there is no drop down option for the blog items, but I wasn’t sure if he just needed a menu option or a drop down as it was a bit unclear without visualization, due to the themes chosen don’t support this naturally.
- & 3.
Ok the location of user/config/themes is something, that I didn’t think about, but that makes sense and can see it is a better practice.
I will go and play with this from this point further.
- Again from lack of structure learning or long term hands on, I did use antimatter (or a theme which has as a reference to drop down) as many of themes I have looked at in my learning, don’t seem to tend to by single page site.
5 and 6 That is a great point , looking at the bigger picture 
- Yep the person who adapter the theme has made it so that grav support the other pages , but the original theme was designed as a single page theme Mache Theme Original
Just the menu options and navigation hasn’t got a fully featured menu system that includes drop down / sub menus, the optional blog function, so I apologies for maybe “for poor grammar / explanation” I do find sometimes my dyslexia can obscure my clarity.
With the theme being 3 years old, it looked like it wasn’t been maintained, (one of the things I have personally found with a lot of stuff with grav, that people dip there toe in too it and for what ever reason “move on”.
I do know from the original post, the end goal hasn’t been achieved as now it been clarified Joe wants a drop down menu and use taxomites / categories to reduce the memory items.
I will go off today and have another ago of get something working, using the points in the discussion from you both and apply them. It will still not maybe be perfect but happy for the input.
Thanks for you both taking the time to reply.
Lets hope v2 will be a bit more in line with your best practice outlines and give joe a good working practice solution which can be used to transfer to other themes.
Thanks all
coffee time and a bit more reading !