we want to use multiple sources using Magento Multistock MSI.
2 of our 5 stock locations are called 'virtual'. They have stock that is not readily avilable but can be sold.
OUr idea is to mark these 2 warehouse as 'virtual'. Orders based on items from these locations should inherit the 'virtual' attribute.
question: how can we add a new attribute to Magento Multistock MSI Sources and show it under Sources configuration as a two options element?