Note that you cannot undo a deletion.
See Roles & Permissions in Sphere XG - An Overview for information which role is required to archive and unarchive projects.
To delete one project:
Click the task panel entry Projects and go to the Archived tab.
Click the tile of the project you want to delete.
Click icon
in the upper right side of the screen.
Confirm that you want to delete the project.
To delete more than one project:
Click the task panel entry Projects and go to the Archived tab.
Click icon
to open the list view.
Select the project(s) you want to delete.Or mark the Select all checkbox at the top of the list to select all projects.
Click Delete on the upper right side of the screen.
Confirm that you want to delete the project(s).