Create a sign that players can right click to join. Requires minigamemaker.create from Permissions.

Place a sign into the world with the first line being [mgm] and the second line containing the name of the minigame. For example, if we have a game called Jumper, we should make our sign look like this:

[mgm]
Jumper

If done correctly the sign will update to show how many players are currently in this minigame

Now any player can right click on the sign to enter the minigame. This works the same as /mgm add-to-minigame