After you have been using a view in Microsoft Project Web App, you may find that it needs some fine-tuning. It may need a field added, or some adjustments to the security settings. You can easily modify existing views.
To modify an existing view:
On the Quick Launch, in the Settings section, click Server Settings.
On the Server Settings page, in the Look and Feel section, click Manage Views.
Click the name of the view that you want to modify, in the Name column.
Tip: If you know the view type for the view that you want to modify, you can collapse the other view types to reduce the number of views to scroll through.
Modify the fields and options for the view and then click Save.