Help vba code for a formula in two cells

[Dine]

Hi Friends,

I have a sheet where I need a formula(as below) to be inserted in the in column "B" and "C" using a vba code.

Column B = NETWORKDAYS(A2,$D$2)-1
Column C = =IF(B2>90,">90 Days",(IF(B2<6,"0-5 Days",IF(B2<31,"6-30 Days",IF(B2<91,"31-90 Days")))))

Attached sheet for your reference.

Capture.JPG

Data in column A and D will change every month.

Request your help on this.