Thank you.
I sent a PM.

Thank you. ALT on the PC did it. 😄

Material Broswer: Texture Size settings...

Click the chain to toggle it from unbroken/broken.
With an unbroken chain the edited sizes change in proportion, e.g. make one twice as big the other one changes to twice its size to match.
With a broken chain you can change edit one size and the other size will remain as it is.
Making the chain unbroken again will re-link them ,and once again they change in proportion; although at this point you may well have got two unequal sizes they will still be changing 'proportionally' - e.g. twice the size...

You may well be right. However, I've only been using Sketchup for a few weeks and as a hobby at that. I've been doing re-paints (skins) for the flight Simulator community for the last 10 years or so and all has been freeware. So my use for sketchup is modelling for flight Sim X.(free stuff) I gave up on Gmax and struggled with FSDS. I can't justify spending 100's of £'s on the pro version as well as the fact I'm retired and live on a pension.
So I shall continue bothering all you learned folk here for the best way forward with the free version 😆

What??? 😕

Joking aside... Some architects would deserve living in the buildings they design. We have a certain one with quite a bit of fame here (all national awards they can get, professor of architecture at the university and such) and I know of a two storey house he designed where he forgot to add a staircase inside the house. Now imagine going upstairs every evening on the outside staircase in winter. 😒

(Worst thing is that the design and plan got the building permit)