Licence question for multiple computers

Suppose I plan a vvvv gamma setup in an event/museum space using 4 computers.
How many licenses do I need on top of the development license?
a.) when using the 4 computers with vvvv gamma ide running?
b.) when using the 4 computers withan exported .exe running?
Thank you.

Does the FAQ here answer your question?

hey wirz,

ad a) you need 4 device licenses
ad b) none