Hi everyone
 
I have had 2 piano roll windows open in multi dock a few times in the past though i cant remember how i did it , as i wasnt concerned about it back then .
 
Can some help with how to do this ,seems that every time i open a PRV the first one dissapears and i am wondering if i somehow found a loop hole when i achieved this in the past ??
 
Thanks in advance .

In the tab at the bottom of the screen, right click and 'lock contents' of a PRV you want to keep seperate

AHHHhhhhh thanku