Forcing Context in Webi

HI  Experts,

I Have  5 contexts which is prompting users while creating ADHOC reports.

But all time user is using  object from one context he don't require . remaining Contexts

Is there any way that we can force the user( With out prompting as he need objects from one context) to use that specified context which he is using frequently.

Any help Much Appreciated

Thanks,

Vaurn