How can I subscribe to the Stock Transfers and Inventory Tracking plugin?

How can I subscribe to the Stock Transfers and Inventory Tracking plugin?

You can subscribe to the Stock Transfers and Inventory Tracking plugin from the Purchase Subscription screen. You can approach this screen either for the Plugins screen or from the Manage Account section. 
From Plugins Screen:
If you are coming from the Plugins screen, you need to click on the Activate button on the Stock Transfers and Inventory Tracking plugin tile to activate the plugin.
From Manage Account Section:
If you are coming from the Manage Account section, you need to navigate to Choose My Subscription section and put a tick in the activation checkbox on the Stock Transfers and Inventory Tracking plugin tile to mark the plugin as Active.
In either case, the application will let you review your order summary before you click the Confirm & Pay button in the Cart Detail section to process payment. 
Plugins in Tagrain are either Subscription Based or License Based. So the price that you pay for your plugins is based on the number of POS terminals that you have in your setup and the number of licences that you have acquired.
There will be no change in your subscription amount in the current billing cycle if you are only deactivating the Stock Transfers and Inventory Tracking plugin AND not updating your Store / POS count.
Once activated, you cannot deactivate the Multiple Units of Measure plugin because deactivating the plugin would affect the entire master data and all the transactions across the application leading to lead to rounding off discrepancies.