TL;DR
Let's Do It Together!
Step 1: Turn on Inventory Tracking
Go to Products in your Shopify admin.
Check the box beside the items you want to work on.
After selecting, click on Bulk edit.
In the bulk editor, click the Columns button on the upper right.
Scroll down and check the Track quantity column.
Check the box beside the product that needs inventory tracking.
For example, check the box for Test Bundle.
Press the Save button on the upper right.
Now, inventory tracking is enabled for the selected products.

Step 2: Edit Inventory Quantities
In the bulk editor, look for Inventory under the product settings.
Click on Inventory to select a location.
Search for the product you want to adjust, like Test Product.
Adjust the number of available items for a specific color, such as White.
Enter the new number in the field and it will adjust the On Hand inventory accordingly.
Once done, click the Save button.
Your inventory quantities are now updated in Shopify.

