A Deployment License is an entry in the Licensing Server that uniquely describes a product used on a machine with a license.

So if you have 1 license using 1 product on 3 different machines, you will have 3 deployment licenses.

If you have another license using 3 products on 1 machine, you will have 3 more deployment licenses, so 6 in total.

Select BLT for LabVIEW in the tree and click on the following button in the menu bar to display the Deployment licenses count:

From there, you can also generate a CSV Report with all the Deployments along with the associated Products, Licenses and Machines:

You can manage your Deployment Licenses in the home tree.
Select deployment licenses and click on the Delete button if you want to remove them from the Licensing Server.