Year End Problem

SUGGESTED

We have completed July EOY Yr End using Sage Procedures.

A)The decision has subsequently been taken to make payments to staff in October which relate to July(Bonus/Commissions/Ad Hoc) 

B)Also the level of Year End Inventory Provision has now been revisited and been deemed insufficient

How to go back to the year end  just closed and insert accruals for the staff payments such that when the actual Payroll is run the effect will be back dated and not impact October P&L?

How to go back and change the Inventory Balances /Provision Balances at EOY.