Minecraft Citizens 2 plugin?

I got this plugin on my server and set everything up perfectly. Now my only problem is that you can't talk to the NPC's. You can set that he speaks to you within a certain range, but not that he only speaks to you when you click on it (similar to Villigar, if you want to trade) … Now I wanted to ask if there was one Command is there, or maybe an additional plugin that makes it possible

You need the CitizensCMD plugin for this

Thank you