The software module ties back to employees, workstations and servers as well as incidents that can be attached to it. The vendor source is independent, cause not every software always did let us link it to a known vendor after all. This could be easily changed, but as of the current version it is not linked.
Under each software entry, you can add licenses. The amount of added licenses will be shown in the search list-box / table as a total. You further can document license keys and serial numbers in a central place as well as select documents you want to link too. Those files can be somewhere on the network, you just select a file link and you can use the open button to open the file with your default Windows application.
In order to link software you need to go to the module for employees, workstations and servers as well as incidents and do the linking from there. Of course, if you want to be able to do it from the software module, this should be easy to implement at any point in time.