Question: What are the event arrangers called for the genre of games Dagorhir Battle Games is part of?

Context paragraphs:
Dagorhir: Dagorhir Battle Games is a Live action role-playing game (battle game) with full-contact melee fighting and ranged combat as its primary focus.  Fighters typically use foam weapons such as swords, flails, spears, bows and arrows, javelins, axes, and other medieval weapons.  Participants wear period costume and are expected to stay in-character during events, although the amount of seriousness the role-playing aspect receives varies greatly by unit and chapter.

Battle Games in Middle-earth: Battle Games in Middle-earth (BGiME) was a fortnightly magazine published by De Agostini in conjunction with British games manufacturer Games Workshop.  Unlike "White Dwarf", which is dedicated to the three core systems of miniature wargaming produced by Games Workshop, "BGiME" was exclusively about "The Lord of the Rings Strategy Battle Game".

Inverness Highland Games: The Inverness Highland Games (official name: "City of Inverness Highland Games"), is a Highland games event in the city of Inverness in the Scottish Highlands.  The modern Games at Inverness have their origin in 1821.  That year, the "Inverness Courier" reported that fundraising was taking place in the town by members of the Northern Meeting Society in order to revive the ancient traditions and to bring a Highland games event to the capital of the Highlands.  The Games took place in October 1822 at the end of a summer which saw numerous Highland Gatherings taking place across Scotland as part of the celebrations that were being held to mark the visit by King George IV.  The 1822 Games held in Inverness were called a “True Highland Games” and featured three cows killed by sledgehammer in order for a competition to take place between teams of men to see who could pull a leg off one of the unfortunate animals the fastest and win a prize of five guineas.

Live action role-playing game: A live action role-playing game (LARP) is a form of role-playing game where the participants physically act out their characters' actions.  The players pursue goals within a fictional setting represented by the real world while interacting with each other in character.  The outcome of player actions may be mediated by game rules or determined by consensus among players.  Event arrangers called gamemasters decide the setting and rules to be used and facilitate play.

Battle royale game: A battle royale game or battle royal game is a genre video game that blends the survival, exploration and scavenging elements of a survival game with last man standing gameplay.  Battle royale games challenge a large number of players, starting with minimal equipment, to search for weapons and armor and eliminate other opponents all while avoiding being trapped outside of a shrinking "safe area", with the winner being the last competitor in the game.  The name for the genre is adapted from the early entries in the field which were inspired by the Japanese media franchise "Battle Royale", as well as being a computerized form of a traditional battle royal.

Action game: The action game is a video game genre that emphasizes physical challenges, including hand–eye coordination and reaction-time.  The genre includes diverse subgenres such as fighting games, shooter games and platform games which are widely considered the most important action games, though multiplayer online battle arena and some real-time strategy games are also considered to be action games.

Belegarth Medieval Combat Society: Belegarth Medieval Combat Society is a full contact battle game where foam weapons are used in order to prevent serious physical injury to participants.  It differs from other battle games and LARPs in that it is entirely combat-oriented that allows hard hitting, shield bashes, and grappling with little emphasis on role playing and has no magic or character classes.  It is composed of a number of not-for-profit "realms", which compete at regional and national events every year.  Typically, each realm also holds individual fighting practices several times a week.  Realms vary in size from just a handful of people to over a hundred fighters.

D6 System: The D6 System is a role-playing game system published by West End Games (WEG) and licensees.  While the system is primarily intended for pen-and-paper role-playing games, variations of the system have also been used in live action role-playing games and miniature battle games.  The system is named after the 6-sided die, which is used in every roll required by the system.

Wyrd Con Interactive Theater convention: The Wyrd Con Interactive Theater Convention is a live action role-playing (LARP) convention.  The conventions began with Wyrd One in 2010.  Wyrd Con is the only convention of its kind on the west coast of the United States, and continues to be one of the largest gatherings of its kind.  The first three Wyrd Cons have been held in Costa Mesa in Orange County, California.  Groups related to Interactive Theater, LARP, or Battle Games may submit their event to Wyrd Con.

John Lindsay (Paralympian): John Lindsay, OAM (born 29 January 1970) is an Australian Paralympic athlete from Melbourne.  He competed in the 1988 Seoul games in distances ranging from 100 m to 800 m, but did not win any medals.  At the 1992 Barcelona Games, he won a gold medal in the Men's 200 m TW3 event, for which he received a Medal of the Order of Australia, a silver medal in the Men's 100 m TW3 event and a bronze medal in the Men's 400 m TW3 event.  That year, he had a Victorian Institute of Sport scholarship.  He was also working as a fitness instructor in 1992, held world records in the 100 m and 200 m events, and was ranked 6th in the world in the 400 m.  He won a gold medal in the men's athletics 100 m T52 event at the 1996 Summer Paralympics with a time of 15.22, a silver medal in the 200 m T52 event with a time of 27.38, and a bronze medal in the 400 m T52 event with a time of 52.93.  At the 2000 Sydney Games, he won a gold medal in the Men's 100 m T53 event, a silver medal as part of the Men's 4x100 m Relay T54 team, and a bronze medal in the Men's 200 m T53 event; he was also part of the Men's 4x400 m Relay T54 team, which was the only one to qualify in its heat, but it did not make it to the finals.  At the 2004 Athens Games, he came seventh in the first round of the Men's 100 m T53 event and sixth in the third round of the Men's 200 m T53 event.  He was an Australian Institute of Sport scholarship holder in 1995 and 2000.

Supporting paragraphs: Dagorhir Live action role-playing game
Answer: gamemasters