That was a good try, the Caps Lock Key, but it did not work.
Since then, I have spoken to a Senior Advisor who managed to help me put the M1 MacBook into a Recovery Mode via Terminal, Typing , resetpassword, I think it was. The documents to recap this are on the way to me I trust.
However, I ran the Terminal command to Create a New Password and it worked.
All is well. I have 3 Macs in my office at this point & I think the thing that threw me was I thought each had to have a different 4 character login password. Not true. They can all have the same login password. So, All 3 now have the same 4 character login password.
One point of interest , I was unable to put the M1 Mac into the Recovery Mode using Restart and the pressing the Command R keys at the same time. I have never been good at this. Shutting it down and restarting with the Power On Key (the finger print key is held down) , managed to help me a lot.
Thank you Branta_uk. TomE (US).