Thank you for your response!
1) Thank you for updating me on the knowledge that's it's possible to insert current date / time via the drop down in the Table Menu. I hadn't noticed that feature. It pays to constantly explore what's new in every drop down all the time as I recently discovered mask with shapes was back -- maybe it's been back for a while, I just hadn't needed it in a while.
2) Thank you also for reminding me that we can make requests for features via the software itself that may actually reach the Apple engineers sooner rather than later. However, if more people mention something to Apple, they are more likely to wake up to the idea -- that's a fact, so if my post causes others to realize this would be a useful function and open a treasure trove of possibilities for Numbers users who already have this kind of possibility in the Seattle-based company software, then it's worth trying to get more supporters -- something which doesn't happen when one submits an idea directly to Apple.
Therefore, I hope other people will join me in asking for these features. We need to be able to have a sheet set the date and time stamp itself upon activation of a cell or sheet, and likewise be able to reset or set conditions of changeable data based on conditions. This will solve loads of problems and create wonderful new possibilities for using Numbers for all kinds of new things.
