The following will explain how to delete a selected object.

The following is the operation for deleting.

Select and press the Delete key.

Depending on the drawing status, there are cases when Delete All as a batch is not executed.
For routed components, there are three separate steps; Delete Route => Delete Net => Delete Component.

(1) Select the object that you want to delete. (2) Press the "Delete" key. Right click => [Delete].