I want to create a user and give visibility to just one project.

[Ricardo Rodrigues dos Santos]

Hi, 

I created a project and would like to give visibility to only one user group.
I have other projects and I don't want that group to have access.
how to set this up?

[John Funk]

Hi Ricardo - Welcome to the Atlassian Community!

You can control who sees the project by adjusting the Browse Project permission in the Permission Scheme attached to the project. 

The most helpful method is to use the Project Roles which can be linked to people or groups. 

[André K_]

Hi @Ricardo Rodrigues dos Santos

just create a new group, add the one user into and assign the desired projekt role to these group in the one projekt.

best
André