Hi there, @Inhishands.
Currently, we're unable to change the default inventory adjustment account to another account.
For now, the only way to set your Inventory adjustment account preference is by clicking the drop-down arrow under the Inventory adjustment account.
You can read these videos and articles to learn more details about inventory tracking in QBO:
You can also visit the QuickBooks Blog to stay updated about the latest features been officially launch out.
Please keep me notified by tagging my name (@Jovychris_A) if you need further assistance. I'll be around to help. Take care!