Hi walt, thanks for the suggestion and it's logical - coming from the PS world as I do - that should be the case. Unfortunately, I've read/heard multiple times that copying masks in Affinity isn't that straightforward. Using the channels window and following lepr's suggestion, I was able to copy the mask and create the spare channel that can then be applied multiple layers (I'm told!). But, I tried your suggestion, the resulting menu options were as per the image.
I'm not overly familiar with Affinity Photo yet - being a newbie of 40 something days - and sometimes the inherent "unintended design features" (of which there appear to be many) can confuse such that I can't decide if its my actions/workflow or the software's problems. But I'm always willing to learn - every day's a school day! 👍🏻
