The council must notify the elections officer of the district council immediately. The elections officer will publish a statutory notice of vacancy which must be displayed on notice boards and websites (both district and parish council). The notice will explain that there is a period of 14 working days during which ten or more electors may petition for a public election to be held to fill the vacancy. If, after this period has elapsed, no petition has been received, the parish council may fill the vacancy by co-option, which it should do at the earliest opportunity. This is usually taken to mean that it must be advertised locally (the district council has no involvement in the co-option process) and included on the agenda for each meeting and that, if a person expresses a willingness to stand, they should be co-opted unless there is a very good reason not to. There are no legislative requirements regarding the process of co-option, so it is up to the council to determine how it will proceed if more than one candidate is identified, but all candidates must be treated equally.