Each conversation has its own sharing controls. Click Share at the top of a conversation to change who can see it. There are two independent settings: who can reach it by default (General access) and the specific people you add.
General access
Invited people only. The default. Only you and the people you add can see the conversation.
Everyone in the project. Anyone with access to the project can see and continue the conversation.
Add specific people
In the share dialog, use the Name or email box under Add people.
Search for a teammate, or type any email address to invite someone outside your workspace.
Send the invite. Adding someone does not change your General access setting.
As you search, Aracor labels each person so you know what the invite will do before you send it: Project member, Not a project member, Not in this project, or Not in this workspace. That label determines the access they get.
Full access and Read-only
Under Who has access, people are grouped by what they can actually do.
Full access. Can read and continue the conversation, and can view and download documents. This is the owner, project members you add individually, and, if General access is set to everyone, the whole project.
Read-only. Can read messages and citations, but cannot continue the conversation or view documents. This covers guests: anyone you add who is not a member of the project, including teammates who are in your workspace but not on that project.
Access follows project membership, so you do not set it per person. If you want a colleague to have full access, add them to the project rather than only to the conversation.
Copy a link
Use Copy link to send the conversation to people who already have access. Each guest also gets their own private link. Links are not public: the project link works for anyone who already has access to the conversation, and each guest link works only for that guest.
Continue a shared conversation
If a teammate shares a conversation with you, you can fork it to create your own continuable copy that keeps the original messages as context. See Continue someone else's conversation. Guests cannot fork.
Stop sharing
Open the share dialog, find the person under Who has access, and remove them. They lose access immediately.