How many licenses are required for this to work?

A customer has two main receptionists using SoftConsole; however, when they are on a break or at lunch, there are four back office workers that can open the SoftConsole on their PC to take calls to cover these periods.

How many licenses are required for this to work?
A . 8
B . 6
C . 2
D . 4

Answer: D

Explanation:

References: http://www.ipofficeinfo.com/pdf/softconsoleinstall_en.pdf Page: 9