You can edit the inventory of each product (or variant) one by one using the Shopify prodcut admin screen. But it is quite time consuming.
The bulk editor is a convenient place that allows you to edit the inventory quantity of multiple products (or variants) on one single screen for both Inventory Groups and Bundle and Sets.
🚀 Pro Tips: The column to edit the inventory is usually named as Inventory quantity , It can also be named after your store's location. If you're not able to find the inventory column, please read this Article How to Find Out Missing Inventory Column in Bulk Editor?
If you cannot access the video, below screens show you how to update step by step.
Click the Edit Group | Inventory button.
It will then take you to the Edit Group Detail screen. Click the Edit Inventory button.
The Bulk Editor will be opened on a separate browser window.
In Bulk Editor screen, edit the inventory quantity of each product (or variant) inside the group. Click Save button when you're done.
🚀 Pro Tips:
Instead of updating the cell one by one, you can copy and paste the value to all the cell.
Update the new inventory to the first cell
Select the 2nd cell
Select the 1st cell again and press “Ctrl + C” on Windows or “Cmd + C” on Mac.
Scroll to the bottom. Press “Shift” button and click the last cell. All the cell will then be selected.
Press “Ctrl + V” on Windows or “Cmd + V” on Mac. All the cell will be updated.
Click “Save” button on the right upper corner