/serversigns setglobalcooldown

Set the global cooldown time for a ServerSigns sign to the number of seconds specified. This affects all players, so if one player right-clicks the sign, no other player can right-click and activate the actions associated with that ServerSigns sign until the specified number of seconds has elapsed. Use the less-restricted command /serversigns setcooldown <seconds> if the cooldown delay should only be applied to players who have already right-clicked the sign recently.