It is a form to elect or change your 457 Plan biweekly contribution. You must have opened your account with the vendor(s) before submitting this form.This Agreement is effective as of the next enrollment or change date as provided for in the current Plan Document. It is a form to elect or change your contribution amount. To participate in the DROP you must complete Form DP-. ELE. All you have to do to begin meeting your retirement goal is complete a Salary. You are permitted to defer a portion of your compensation to the Plan. The Plan allows you to designate the deferrals as either.