Trip - Collaboration
A trip can have multiple members. Members can interact with everything within the trip and can associate their places to it as well.
If you're looking for read-only or anonymous sharing, see Anonymous share for details
Invite multiple members to your trip for seamless collaboration. Everyone can contribute by adding new places, which become visible to the whole group but remain editable only by the person who created them.
To invite someone, enter his username in the members modal to send them an invitation notification. Once accepted, members gain full access to interact with the trip (plans, places, attachments, lists, ...).
A plan may have a price, if there are multiple members, the price can be linked directly to the member who paid, helping track who owes what to whom. This is a basic feature designed for planning, not a full expense splitting app.