Design Studio application in NW-Portal (question regarding authority)

Hi all,

we are using Design Studio 1.1 and a SAP NW BW system 7.30 SP09 (Java (Portal): SP10).

I am able to execute a application out of design studio in our portal.

But a "normal" user without any administrator-authority doesn't see the application, but only an empty page in browser.

If I assign role "SAP_J2EE_ADMIN" to user he is able to execute the application.

What I have to do now to give user possibility to execute Design Studio applications but no admin-authority?

Regards,

Christoph