The negotiated regulation making authorized by AS 44.62.710 - 44.62.800 is in addition to the procedures required under AS 44.62.010 - 44.62.320 for adopting, amending, or repealing regulations, and, if an agency head decides to use negotiated regulation making, the negotiated regulation making shall, where possible, occur before the procedures under AS 44.62.010 - 44.62.320 begin.