Two windows on this machine. Use the same person, tenant, scope type and scope id in both. In each window: Mint test token, Claim payer and open room, Listen once, then Post message. The second window joins the room the first window opened. Clicking Claim again joins that same room and keeps its conversation id.
If the log says the payer claim conflicted, this person does not pay the tenant. Switch both windows to the person id that claimed it, or type one new tenant id in both windows. A room you cannot access is reported as not found.
Conversation (none yet)