Low voltage DC led drivers can be dimmed in many different ways. The simplest dimming solution is using a potentiometer which gives a 0-100% dimming full range.
This solution usually recommended when you only have one power supply in your circuit, but there are multiple led drivers being dimmed from one potentiometer, the value of the potentiometer can be found from – KΩ/N – where K means the value of potentiometer and N means the drivers using number. Just connect the ground wire to the center prong and the dimming wire to one side or the other side.
Second option for dimming is to use a 0-10V wall type dimmer, this is the better way of dimming if you have multiple power units, cause the 0-10V dimmer can work with several drivers at a time. Just hook the dimming wires right to the led drivers input hole.
