Payroll Source deduction payments

Hello

I'm a bookkeeper, 1st time using Sage Payroll, but i see the auto DR/Payment company is A) very expensive and B) does not handle Source deduction payments which is disapppointing. How are folks handling the source payments? In particular for clients who do NOT have the bandwith for extra work (hence why they hired someone in the 1st place.)

And advice is appreciated

Meghan