Which is the Passive Voice such a manner that it is used in this sentence is meaningful in this context. All employees can not be triggered if you want coverage. When triggered, the Passive Voice is to be.
The Passive Voice for such action. The sentence It is significant in this context. All employees can be motivated themselves. But had to be When stimulated not only is going to be a Passive Voice.
Which is Passive Voice because verbs as such used in this sentence is the meaning in this context. All employees can't be motivated, but must be stimulated. When activated only is to be a Passive Voice.