That's because there is so little you can do with these lights; set the power level and shoot.
1. Set up your subject;
2. Set up your light with modifier and point it at your subject.
3. Set up your camera (ISO, shutter speed and aperture)
4. Set the studio flash power level and take a shot.
5. Look at your histogram and adjust exposure (via aperture or ISO) based on degree of over or under exposure or change the amount of light output by the flash.
Repeat steps 4 and 5 until you have a decent exposure.
Then adjust your lighting (position and angle of the light modifier) as required and do steps 4 and 5 again.