BLu Ray Scenarist HDMV button command question

[Chiku]

I have a main menu with play, chapters and extras button. When i hit chapters button a chapter menu pops up showing the chapters but it closes the main menu. (Main menu is one page with three buttons and chapter menu is another page with 5 buttons.....but these pages don't over lap each other)
I want the main menu to be open while the chapter menu pops up. Can anyone tell me how to do this or which set of commands to be used? I am using setButton page command in Scenarist HDMV but it closes one page and opens another. I want both the pages to be open simultaneously. Any help will be appreciated. It is illustrated below:

Ch1 Ch2 Ch3 Ch4 Ch5 ---------- Chapters Page

PLAY CHAPTERS EXTRAS -------------Main Menu Page