There have been some questions recently about the footer and its placement and some confusion about when one, two or three metres apply.

References From the Laws Of The Game
1.3 The FOOTER, which shall be round, shall have a diameter of not less than 125mm and not more than 155mm. The footer is not part of the green and any bowl or jack travelling over, or touching the footer, must be returned to be played again.
2.5 At the commencement of a game the footer must be placed by the leader, within three metres of the entrance to the green, on either the left or right side and one metre from the edge but no more than two metres from the edge.
3.1 A bowl must be played at least three metres from the footer and rest on the green to count, except when all the bowls of the opponent(s) are out of play.
5.1 At no time may the footer be used with the centre less than one metre from the edge of the green.
5.2 Objection to the placement of the footer must be made by the leader’s opponent only after the first bowl has come to rest or, if in the leader’s first attempt at setting a mark, the jack goes off the green. If the footer is then found, by measurement, to be incorrectly placed the end shall be re-started, with the footer correctly placed, the opponent attempting to set the mark, otherwise play shall continue.
5.7 A player may retain possession of the footer until that player’s bowl has ceased running. If a player has taken up the footer after playing a bowl, which for any reason has to be replayed, or if the footer is accidentally displaced during an end, it shall be replaced as nearly as possible in its former position.
5.15 After each end is concluded, the footer shall be placed at the jack by the last player. The footer may only be repositioned by the leader of the next end and before the first attempt to set a mark, anywhere within a space of one metre from where the jack lay at the conclusion of the last end but at least one metre in from the edge of the green. The footer must not be moved after the first attempt to set a mark by either the leader or the opponent until the end is concluded.