Commands are executed on your game server.

Field explanation

Command: This is the command that will be executed, global and package commands can have variables as part of them. Server: This is the server upon which the command will be executed.
Type: This is the event that triggers the command to execute.
Require Player Online: Should the player be online for the command to execute?
Required Inventory Slots: How many slots should the player have availabe in their inventory for the command to execute?
Tag: This is the command tag, you can tag commands so that they can be mass marked as pending using the Command Queue. This is useful if you've just reset your server and need some of your commands to be run again.