I have some steps that can help you record the installment, jon25.
You can either create an expense or cheque. You'll be able to create a sales tax payment for a specific date and that it will reflect on your Chart of Accounts.
To record the payment, you can follow these steps:
Click the Plus (+) icon located in the upper right-hand corner.
Under Suppliers, click Expense or Cheque.
Select the supplier from the Payee drop-down menu and choose the Payment account.
Select the Payment date, and choose Out of Scope of Tax from the Amounts are drop-down list.
Under Category details, select the appropriate tax suspense account on the first line. This represents the tax to pay. For example, select GST/HST Suspense or PST BC Suspense.