In the Wine cellar view click on the arrow in the actions column on the right hand side of the wine you want to add, duplicate or delete a bottle from. In this picture we chose 'subtract bottles.' from the Butternut Chardonnay

You can also access this operation from the individual 'Wine view' (by a click/tap on the pencil icon) in the 'wine cellar' view, above and then choosing from the menu at the bottom of the 'Wine view' window below:

Either of these methods opens up a window that will give you many options for you to record how and why are you are subtracting bottles from your inventory.

For instance, if you drank the bottle you can choose that 'type' (record a drink) and another window will open and give you plenty of options to describe the enjoyment of that bottle.

Fill in as many fields as you like and then 'save and close.'

This procedure is very similar for adding and duplicating bottles as well.

Any other form of inventory change will ask you to save from the left side of the lower panel in the edit inventory window:

You can check your inventory changes by clicking on the 'HISTORY' tab next to Inventory. It shows 'current inventory' and 'history' of changes.

You can 'edit or delete' the change by clicking on the triangle to the right of the row.

If you edit in the HISTORY panel, remember to save at the bottom.

You will see the results in wine 'cellar view' if you have QTY showing as a column.