Does a judge have the power to stay imposition of sentence and execution on the enhancements to the original sentence?

We need only briefly reiterate the sentencing error committed. The trial court did not have the power to "stay" imposition of sentence on the enhancements. In addition, although the People do not raise it, the court did not have the power under section 654 to stay imposition of sentence rather than impose sentence and stay execution on the substantive crimes. (People v. Cheffen, supra, 2 Cal.App.3d 638, 641-642, 82 Cal.Rptr. 658.) Each defendant's sentence is unauthorized.