Subtract Monthly Exemptions /132 from /115

Dear All,

/115 is generated by X023 PCR under Eemployee subgroup grouping 3. /132 (monthly exemption) is generated under Eemployee subgroup grouping *.

I want to subtract *132 from /115 (3 EE SG). How can this be achieved in PCR?

Please help

Regards

Astha