Thanks for the advice. The one row in the field will change monthly. I know in Excel that you can put a simple formula that links the two cells.
So if you change the one cell, it automatically changes the cell on the other worksheet.
That what I am wanting to try and do in the airtable.
I will change the details in a particular field on the main Base. If i do this it needs to automatically up date that field in another base.
Your example and explanation above, is this the simplest way of doing this