To change the name of a Project, or to add or remove an image of a Project, first open the Project you want to make the changes to. The easiest way to do this is from the Project switcher at the top left of the screen.

Once in your Project, go to the blue button with the three vertical dots and select the 'Project properties' option.

You can now change the name of the Project, as well as change or remove the logo of the Project. When done, save the changes at the bottom.