Detailed or Overview report toggled by parameter - CR

Create parameter {?DetailedOverviewReportParam}, two fields with values 1 & 0 and descriptions 'Detailed Report' and 'Overview Report' respectively.

Create formula {DetailedOverview}
shared stringvar fullsuppress := {?DetailedOverviewReportParam}

Put both {?DetailedOverviewReportParam} and {DetailedOverview}in header area, make invisible (to initiate when report is run).

In Section Expert, formula for Suppress (No Drill Down):
shared stringvar fullsuppress;
fullsuppress = '0'