CEWS!!! Manual calculation of wages and CPP/ EI

SUGGESTED

We pay employees either monthly or semi monthly depending on their role.  Does anyone know an easy way to calculate the CEWS weekly wages other than going back and manually figuring hours worked / to fit in the weekly dates required by CRA?  I will also need to recalculate cpp and ei based on a manual calculation of their pay. There must be something easier.  My accountant cant help