It seems that something is missing in your text.You mentioned a table and a couple of formulas that are not in your text. If you provide a workbook with at least part of your two data sets would be good to understand better the problem and give you a solution.
Sorry my screen-shots didn't save into my message.
I've started another Q - I couldn't work pout how to add an attachment ...
Not sure at what point you're not finding how to add an attachment but just in case: Click "Use advanced editor" (top right) and then towards the bottom right next to "@Mention" a blue "Attach" appears. Yay!
I often wonder why that isn't on the default toolbar next to image or video, but that is how I go about it.