How to add custom command handler to jabber room?

Question

XMPP

Hello!
Tell me the solution: there is a corporate chat on openfire ( www.igniterealtime.org/projects/openfire ), I want to add the ability to vote to it. What is the best way to do this?
The case is as follows:
The department communicates, for example, about a corporate party, they choose from three options.
You need to be able to send something like "/vote 1" to vote for the first option.
How to implement it?