Pre-requisites:
Role privilege as mentioned below, on the project that is to be edited:
To edit the project, the 'Edit Workspace Details' privilege must be assigned to your role.
Below are the steps to follow while editing an existing project:
1. Navigate to the 'Projects' tab. In the thumb view, do a mouse hover on the project thumbnail and click on the 
icon.
A layered screen appears showing related options. Click on the 'Project' option with the edit icon to begin editing the selected project.
Alternately, in list view do a right click on project record, select 'Edit Project Information'.
2. The 'Edit Project' screen appears.
The 'Edit Project' screen has below tabs:
Basic Information - To edit basic information about the project. While editing a project, you cannot change the client name, geography, or viewer under the 'Basic Information' section.
Inheritance Option (In case of projects cloned from project templates) - To remove inheritance of workspace objects.
In case you have multiple projects cloned from a project template, and when you need to change project configuration on some or all of those projects, it is advisable to follow below guidelines:
If a change in configuration is required only on a specific project, it is suggested to change the configuration only in that particular project so that it serves your purpose.
If the configuration is required in general for other projects as well, it is best to communicate to the relevant project manager about the general configuration and get it updated on related project templates directly so that all projects can benefit from it.
Additional Information - To edit additional information on the project.
Project Settings - To edit the project settings as required. While editing a project, you cannot change the configuration for 'Enable Object level visibility of private information' and/or 'Enable Comment Review' once enabled under the 'Project Settings' section.
Email Notifications - To edit the notification email details as required.
Working Calendar - To edit the working days and/or holidays for the project as required.
Check: FAQs
Related Articles: Add a Project
Next Article: Edit a Project - Inheritance Option