Archiving Project
You can archive a project under Manage > Projects by clicking Archive Project button at the bottom of project listing.
You cannot able to post timesheet when the project is an archive.
When hovering on the project, a menu displayed at the top right and click on the star icon to view the archive project option.
When the project is archived it list only on the archived list by choosing Archive Project button at the bottom of the project listing,
When hovering on the project, a menu displayed at the top right and click on the star icon to view the unarchive and delete project option.
You can unarchive the project when you wish to enable the project to post time entry.
Deleting Project
Delete option is available only if the project has no invoiced or uninvoiced hours.
You can not able to retrieve the project information once it is deleted.