Yea, it’s as easy as everyone picks up a subscription. With UE4 being such a great value now, it’s open to everyone!
Here’s more information from the EULA:
User License
The Licensed Technology is licensed to
you for use by a single User. The
User may store the Licensed Technology
on any of the User’s computers, but
the Licensed Technology cannot be
shared with others (including any
other employees or agents) except
through a permitted Distribution as
described above.