3 month deferral also set as 3 pay periods for new employees

I have been advised to add as an idea.

As we are a TV company we have employees that invoice (no tax or NI deduction and only assessed for AE Pension) which could have started 3 months ago but only just sent us the invoice. Currently Earnie (Iris) will either look at the start date if that is in relation to the current month or it will give an AE date at 3 pay periods.

Can we set the same rules on Staffology please