Dear Anto, thanks for your reply! I'm sorry for beeing quiet for such a long time, I really tried to figure out what you did here, but still could't make it unfortunately. It is fascinating how you manage to make it work, but even when I work along watching your video (the last one), I still don't get a reasonable result. I don't even understand the logic when I watch your video. It doesn't make the slightest sense for me, that the merging boxes overlay each other and when I try it anyway, it generates the content still unsufficiently.
I do get the basic merge system of affinity (for layouting business cards for example), but obviously I can't adapt it for my case. What a pity, but I guess I have to throw the towel here.
Thank you so much for your efforts. I'm really impressed by your skill and supportiveness. Thanks a lot!