Opening multiple Tkinter / Pmw (python megawidget) windows

I want to open multiple tkinter or pwm windows simultaneously,
for now i am using base.startTk() which renders my GUI, but when i call then directpanel gets rendered on my GUI, and disturbs positioning of all components.

I want to that button clicked from my gui should open placer panel for camera (tkinter placer panel) and shouldnot render directSessionPanel into my gui window.

Please suggest me what should be done, for resolving this problem.