first of all, the name of the company/software is singular (MicroStrategy), not plural (MicroStrategies)
if you want to use stored procedures, you can call them using a report post statement, something like this:
{call Procedure_name(arg1, arg2,..,argN)}
you can access and edit the report post statements by editing a report and going under Data > VLDB Properties > Pre/Post Statements Folder. details are in tech note TN4000-071-0683.
is this what you had in mind?