If you want to assign multiple commands to only one hotkey use this command. In the parameter tab you can add the individual commands. There you can move the command items up or down to change their order in which they will be executed.

If you want HotKeyz to wait between each command then add a Wait command in between the other commands in the command list view.

One of my favorite multiple commands is to Lock my workstation and then switch the monitor off to save power.