I have a question about possibility to add multiple JMX interfaces in Zabbix Server when Adding monitored host.

What's the purpose for add two JMX interfaces on host when only one works?

I mean:

On port 56117 we have on worker and on 56002 we have another worker. There are custom JMX workers that's why we need to create new templates with specific items. But how Application from Template will know which worker is available on which port ? 

on 56117 works worker which can be monitored when Template_A is linked and on 56002 works worker which can be monitored Template_B. 

What does those two JMX interfaces mean when adding them on single host?