Sync your camera to the strobes so that they fire when you trip the shutter. Here, you have a couple of options. First, you can use a sync cable from camera to the strobe and if you have more than one strobe, set the other units for the photocell slave function & they will fire at the same time. You could use an on camera flash with a diffuser dome or similar, to direct its light toward the StarFlash & use its built in photo cell slave. With this method, the preflash system needs to be disabled & usually it is desired to turn the on camera flash to a lower power so as not to interfere with your other lighting.
The best option is to use radio slaves to trigger your flash(es). In this case, you will have a transmitter mounted to the hot shoe of your camera that will send a radio signal to the receiver attached to your strobe. If you want to avoid other peoples cameras from triggering any of your strobes, you need to use the radio slave receivers on each unit & turn off the photo cell slave sensor.