An AGENTPP site license covers all users working at the licensed site and all telecommuters reporting to managers working a that licensed site (site = business location with a unique postal address).
This particularly applies to AgenPro, MIB Explorer Pro, and MIB Designer.
For SNMP4J-AgentX, SNMP4J-SMI-PRO, AgentX++ the statement above is true too, but the license differs a bit from the tool licenses because the latter are development licenses. The distribution of the APIs in binary form and bundled with a value-adding application is not bound to the users nor a specific site with those licenses.
The developers, build managers, i.e. anyone using the API code (binary or source), however, is only allowed to use those APIs if he/she is working at the licensed site (=location) or - as a telecommuter reports to managers at the licensed site.