Tenant lighting

Hi all, In our project, there will be a tenant lease agreement so that the Lighting Power density with which they design the office spaces should be below 9 W/m2 (lower than the base requirement used for the base building). That would give an energy saving measure compared to the baseline model for the energy modeling. In EAc5.1, we are supposed to be able to quantify the energy savings, and as such would need to monitor the lighting for tenant spaces independently in that case. But in EAc5.2, we can combine plug loads with lighting loads for tenant spaces. In that case, should we then monitor separately the lighting from the plug loads for the tenant spaces since we are claiming savings on the tenant lighting portion? Thanks.