How to restore inventory qty adjust

I can assist you with this, sharon33.
 
You can manage your inventory through your Sales tab. Let me guide you through the process.
 
Here’s how:
 

1. Go to Sales tab and select Product and Services.
2. Look for the product that you wanted to adjust and click Edit.
3. On the Quantity on hand, click the hyperlinked word Quantity.
4. Add quantity on the Change in qty column.
5. Hit Save and Close.

Refer to the photos below for your guide on the steps that are given:

This is the column where you will add your items.

After adding the quantity of the item, you can verify the changes in your Products and Services page that New QTY will increase. It is the sum of the QTY on hand and the recently added items.

You can also use the feature to track your inventory to set up your reorder point to check if you are running out of stock in QuickBooks Online Plus. You will receive a notification once it reached the reorder point. If you don’t have Plus, upgrade your QuickBooks plan once you're ready to start tracking your inventory.
 
For future reference on managing your inventory, check out this article: Set up and track your inventory.
 
Loop me in if you have further concerns. I’ll get back to you. Have a great day ahead!