Adding Bex query to exiting Portal Role (Portal Content)

HI There - new to the world of publishing Bex queries to the Portal - would greatly appreciate any assistance.

BI 7.0 EP 6.0

COuld you outline in basic step by steps, how I can go about adding a

newly created Bex query to an existing Portal role.

I know that it is a matter of editing the Portal content but cannot

find any documentation to assist me in doing this.

The queries have been written on our Production BI system but the DEV

system is our master system. All teh queries have been published to the

Portal.

Any assistance is greatly appreciated as I am pulling my hair out.

Thanks

Conor