Server Settings Help

  • So I just got a server up and running and have been about a week trying to figure out how to get the chests to have a lock option in the server, I was aiming for that with the intention that if people playing wanted to have a box outside with freebies for someone wandering by they could be nice and have an open box, or just because it's nice to have a little privacy in your boxes from inviting guests into the house, I have tried figuring it out, and all the spots I look just say "Buy my premade server settings" or "Just turn the Nocontainerownership to True" and neither of those work in any order I have tried. Is there a different trick or specific thing I have to do for getting this to work?

    I have seen this set up in official servers, so I know it's possible, I just can't figure it out.