Hello @TheKeeper20 ,
How you do this will depend upon whether you use the built-in payroll remittance filing system by using "Pay Payroll Liabilities", or whether you do it outside of that function in QB.
If you do use the pay liabilities feature to file your taxes, then you will have to use "Adjust Payroll Liabilities", and make an entry for the affected employee.

When there is a shortage discovered in a PIER review, the employer is responsible to pay both portions; the company's and the employee's. This adjustment will affect your CRA Payable liability account as well as your CPP Expense Account. When you go to make your next remittance using "Pay Liabilities", these amounts will be picked up.
If you are not using the "Pay Liabilities" module to make your remittances, but rather are writing a cheque to decrease your CRA payable liability account, then you would have to do the following:
1. Create a JE to increase your CRA Payable account, and also to increase your CPP Expense account.

As this is being added to your payroll liability account to the CRA, you will pick it up when you write your next remittance cheque (or you can pay it right now just for the $10.00 amount). Either way, when you write the cheque you will be posting to the payroll liability account, i.e. CRA Payable.

Now your CPP liability, CPP expense, and bank have all been affected correctly and you will have satisfied the PIER review.
Good luck!