Hello there, @Parks Accounting.

Currently, posting the subsequent entries automatically once an amortisation has been calculated is unavailable in QuickBooks Online. I'll personally take note of this idea and share it with our Development Team. They'll analyze this one and may be added to our future updates.

Since depreciation is manually calculated, you can create a journal entry to record the lost value. I'll show you how:

1. Select + New icon then click Journal entry.
2. On the first line, enter the depreciated amount in the Credits column then choose the asset account from the Account dropdown.
3. On the second line, select the Depreciation account you just created from the Account dropdown. Enter the same depreciated amount in the Debits column.
4. Hit Save.

See this article for more information: Depreciate assets in QuickBooks Online

However, it would be best to seek advice with your accountant in this process. They can guide you further and help you ensure that the accounts you're using are the appropriate ones.

In the meantime, I recommend visiting our Blog site to learn what new updates are being rolled out, as well as additional references while working with QuickBooks. 

Please know that you're always welcome to post if you have any other concerns with QuickBooks. Stay safe and have a wonderful day ahead!