How many licenses are used on a multi user android device?

hi,

i was wondering how many licenses are going to be used on a multi-user-android device running android 6? i have already installed it on the main account and logged in. as expected this has used up one of the available licenses.

But Norton Mobile needs to be installed for each of the 4 users on my device separately. after installing it on the second user i was surprised that i have to log in another time. will that use up another license?

thank you and kind regards, robert.