Thank you for the reply. Finally, I was able to succeed in what I wanted. I had made the mistake of writing several lines in Custom Commands. But using the Multiscript below solved the problem.
MC.CloseAllTabs RIGHTONLY
MC.Explorer.Goto LEFT="Path1"
MC.Explorer.NewBrowser SIDE=RIGHT PATH="PathA"
MC.Explorer.NewBrowser SIDE=RIGHT PATH="PATHB"
I started trying out MultiCommander only yesterday, and it seems to be a great program! Thank you for your effort!