How to deduct charitable donations from payroll, show on T4, get tax receipted?

SOLVED

We use Sage50 as our church's accounting program.  Two of the employees of the church want to make charitable donations to the church as a deduction directly from their pay cheque.  1. How do I set up this deduction in payroll?  2. Does Sage50 automatically show this in box 46 when we print T4s or do I have to set that up?  3.  How do I make sure the donation is showing up as a donation to the church?  I.E. For people who give charitable donations to the church through Sunday offering I have them set up as customers and I assign their donation as a project allocation.  But I don't know how to make that part work when it's coming as a deduction from payroll.  Thank you.