How to hide flows

Hi there, I presume I’m asking some very basic and dull again.

I’ve been creating a worksheet using loads of flows.
Deleted music frame on the first two pages and created a new music frame structure spliting all in two columns. I’ve sorted out players and flows in my bespoken music frames and first two pages looked cool.
But my project had been followed by other pages, containing all flows unformatted.
When I changed something in the first two pages, the same had been changing on the subsequent pages, and vica versa.

Actually it isn’t a big problem as I can print only the first 2 pages and that’s it, but I suspect I’ve done something wrong and very unprofessional:)

The issue with the mirrored frames has been answered here