You can easily adjust the inventory in any location by selecting the option on the App: Stock in Locations
Then simply scan the location ID you want to view and the system will display all products that are stored in that location:
Then just increase or decrease the available stock by pressing the plus and minus buttons.
You cannot adjust stock that is allocated to orders, if you need to adjust this you must first remove it from the order records
Once you have adjusted the stock to desired level hit the save button and the App will display a success message;