When a project is added some info is added for that project. You are able to edit most of the data after creating the project.
Like Contract number, Default Language, Project Contacts info, Logo, Clients user setting, Notifications sending time etc.
Login to the project
Go to the project Administration in the menu
Click on Project Settings
Here you can see the general information of the project
You can change the information if you like
To save the information, click "Update Project Settings" at the bottom of the page