Does anyone know best practice here to be able to interact with the freeswitch conference API so I can mute users and list participants from a web browser, ideally without using dtmf?

I have previously used Verto, but due to scale I am using kamailio/rtpengine as a websockets gateway which then load balances requests to freeswitch so its only dealing with SIP and RTP.

All works fine, I just want to now be able to kick users/list participants and so on via the browser so wondered the best way to do this now I am now using verto, as I used to subscribe to live array for that but now I am using sip.js to fire SIP requests over websockets, how do I send conference api commands and to the correct box as well if a farm of freeswitch servers are in use.

Many thanks 

Jon