What you need
Before
Pick a bench with life around it: a busy park path, near the playground, outside the library.
Make the sign. Owen-Jones's original was just a printed sheet, laminated, tied on with ribbon, and the classic wording is free to copy: “Happy to Chat bench. Sit here if you don't mind someone stopping to say hello.” Then tell the parks department or council what you're up to. Most say yes quickly, and many will mount a permanent sign once they see it used.
Post the bench's location in Plurality and create a poster so neighbors know it exists.
During
Lead by example. Find a time each week at a predictable hour, and say hello first. You're modeling how easy this is.
Keep the chats agenda-free. Five minutes about the weather counts in full. Nobody has to disclose anything, fix anything, or stay. The bench asks for exactly one thing, and the sign already said it. If the conversation lulls, you can use the Prompts tool to find a few conversation starters.
Watch for the regulars. The folks who keep coming back are telling you the bench matters. Learn their names.
After
Photograph the bench with its sign and invite folks to record any other Moments. The photo is how benches multiply; Owen-Jones's movement spread bench by bench as pictures traveled, so share yours where your town will see it.
Then add a second bench across the neighborhood, and check the sign after hard weather. A faded sign reads as an abandoned idea. A crisp one says somebody still means it.