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

Session-wide link

During testing, you can open this link in up to 4 tabs.

https://otreehub-testproject.herokuapp.com/join/hopateta

Persistent links

For a real session, you should use a room.

Single-use links

Below are single-use links, which you can distribute to your participants. Each link has a unique code for the participant.

P1	https://otreehub-testproject.herokuapp.com/InitializeParticipant/dal2wck8
P2	https://otreehub-testproject.herokuapp.com/InitializeParticipant/1e2i2j7b
P3	https://otreehub-testproject.herokuapp.com/InitializeParticipant/uw4chmjm
P4	https://otreehub-testproject.herokuapp.com/InitializeParticipant/z9808fkd