Welf. & Inst. Code, § 682

(a) To continue any hearing relating to proceedings pursuant to Section 601 or 602, regardless of the custody status of the minor, beyond the time limit within which the hearing is otherwise required to be heard, a written notice shall be filed and served on all parties to the proceeding at least two court days before the hearing sought to be continued, together with affidavits or declarations detailing specific facts showing good cause for the continuance.

(b) A continuance shall be granted only upon a showing of good cause and only for that period of time shown to be necessary by the moving party at the hearing on the motion. Neither stipulation of the parties nor convenience of the parties is, in and of itself, good cause. Whenever any continuance is granted, the facts which require the continuance shall be entered into the minutes.

(c) Notwithstanding subdivision (a), a party may make a motion for a continuance without complying with the requirements of that subdivision. However, unless the moving party shows good cause for failure to comply with those requirements, the court shall deny the motion.

(d) In any case in which the minor is represented by counsel and no objection is made to an order continuing any such hearing beyond the time limit within which the hearing is otherwise required to be held, the absence of such an objection shall be deemed a consent to the continuance.

(e) When any hearing is continued pursuant to this section, the hearing shall commence on the date to which it was continued or within seven days thereafter whenever the court is satisfied that good cause exists and the moving party will be prepared to proceed within that time.