Mobile:
Click More in bottom right
Go to Parts Inventory tab
Select Part to add Location
Click 3 dots (⋮) next to Restock in top right corner
Select Edit
Select Location to add in Location field
Click Update in top right corner
Web:
Go to Parts Inventory tab
Select Part to add Location
Click 3 dots (⋮) next to Restock in top right corner
Select Edit
Select Location to add in Location field
Click Update in bottom right corner