VirtualChest - Provide virtual chest GUIs for menus like ChestCommands (SpongeForge/SpongeVanilla 1.10.2, 1.11.2, and 1.12.2)

Plugins Plugin Releases
105

Adding cooldowns for something is beyond the scope of the plugin. Maybe you can find another plugin (such as cmdcontrol or something else) for setting command cooldowns.