How to hide a certain message displayed in default roblox chat?

I'm trying to make a system where you can invite players to join your party through a chat command. It uses "/invite" at the start of the message. I don't want it to be displayed to other players as a normal chat message, so sorta like how the /e emote system roblox works. What do I use to do this? Not asking for code, just don't know what I'm looking for.