Calling a customized format from menu


I have created a menu for a special set of ESS users. Here along with all other options, I want to put an option from where these users will be able to raise a new interaction and that should open a new customized form which I have created.

I have seen that for raising a new interaction from ESS portal, Its "ESSSM" menu, from where "" application gets called an respectively the the format "" gets opened. Now I want to open an other customized format to opened here from menu.

Please suggest.