Hi Daffy
If designing a new paystub in Paymate is anything like it is for the US version of Paymate, you are facing a mighty struggle. The forms design utility they use, called Report Builder, is probably the hardest piece of software I have ever tried to master.
You are far better off paying Paymate to design the spec for you, and gritting your teeth that the only reason you are paying them to do it is because of their incompetency in picking a worthy tool.
Steve