Each driver can run a number of lights. Simply divide the wattage of the driver by the wattage of a single light to find out how many lights can be run by the driver.
Remember to ensure the driver has sufficient ports: a driver with 4 ports is limited to a maximum of 4 lights, 6 ports limited to 6 lights and 12 ports is limited to a maximum of 12 lights.
These drivers are not dimmable by themselves, nor have they been tested with 3rd party dimmers.
If a dimming function is required, these drivers can be used in conjunction with the Dimming Receiver (SE790050) and the 3-in-1 Remote Control (SE791990).