Done that and checkbox works absolutely fantastic - thank you so much for that.
Will do same on my own document now.
If I copy and paste a checkbox will it automatically 'pick up' that functionality (or would I need to repeat it each time a further checkbox was added)?
If I send that document to someone, do they have to run that trap events macro first themselves before it would work for them?
Just want to make sure in case I need to include any instructions to help the recipient of the document (or even to add in some trigger (if possible/necessary) that the first time that document is opened it runs the trap event automatically cos if not I could see this being a difficulty for many recipients to know what to do - if they are equally as non-VBA 'expert' as me!).