You can either use the session-wide link, persistent links, or single-use links.

Session-wide link

If it's not practical for you to use a Room, you can distribute the following link to participants.

https://decisionmakingexperiment-96fda9fa25ef.herokuapp.com/join/dihehulo

Persistent links

For a real session, you should use a room.

Single-use links

Below are single-use links.

P1	https://decisionmakingexperiment-96fda9fa25ef.herokuapp.com/InitializeParticipant/ynkw5upy
P2	https://decisionmakingexperiment-96fda9fa25ef.herokuapp.com/InitializeParticipant/vcokyfdl
P3	https://decisionmakingexperiment-96fda9fa25ef.herokuapp.com/InitializeParticipant/4cgimcha
P4	https://decisionmakingexperiment-96fda9fa25ef.herokuapp.com/InitializeParticipant/sb93ig5v