I have one project file,say, myproj.pcbprj. in that i have 2 schematics sheets a.sch and b.sch. i added pcb files to the project, a.pcb and b.pcb. what i need is a.pcb to populate ONLY from a.sch on a board. And b.pcb to populate b.sch ONLY on another independent board, how? What normally happened when i 'insert from sch' in a.pcb editor, it will add components from both a.sch and b.sch into a board (combined from a and b), i dont want this, there is no option to do this. I dont think altium this limited i maybe dont know the term/option to find. how?