Count type of licences

Discussion created by Tran-Hoang_Hau_348 on Aug 2, 2016
Latest reply on Aug 3, 2016 by Tran-Hoang_Hau_348
Q : I need to know some information about the licences, for this reason i do the below questions: 

You can say me perfect way to count: how many licences are busy?, how many licences are available?, how many licences are in total? and how many license types installed? 

I saw some information in User Interface>System Overview>License but i gave confuse with that, is not clear for information that i need. 

A :--> If we see the below screenshot, 
The total number of Unix agent license is 20
2 Unix licenses are currently in used (busy) and of-course 18 Unix licenses is