I see, the sencha command generate each and every apps independently with all required ext framework files and even more with only one theme resources. May be I am not more familiar with sencha command.
I looked into both the single page and multiple pages examples, but I found it won't fit for my scenario.

My requirement is like

Code:
approot/
  lib/
  applications/
    MyApp1/
    MyApp2/
    MyApp3/
  utils/
  ext/
  resources/
  themes/
    default/
    gray/
    neptune/
somewhat like this. This can be done manually simply. Anyone managing similar projects with sencha commands?