You can easily edit a project's start/end date, name, and status directly inside the project manager.

To open the edition panel, right-click on your project box or click on the three dots on the right of your project to flip the tile, then click on the edit button.

A popup window will appear: change name of the project and/or start/end date.

Then click on Edit project to save changes.

Project status

For more information about the project status (validated and signed), click here: Validate and sign a project‍.