Before customizing your Firefly light's flash pattern, please note that you would first need to have the Lumos App installed on your smartphone and the lights paired.
If you have more than one Firefly, you're only able to customize that one light at a time. Simply:
1. All you have to do is head on over to the Lumos App and then click on the particular Firefly icon from the "All Devices" tab you'd like to customize (In this case, it's labeled as "Firefly 3"). You should be able to view the main menu screen which would look like this:
2. For the Firefly lights, you're able to customize up to 3 light modes which you can then later switch/scroll through by clicking on the power button once.
3. In this case, the example shown in the image above indicates that "Light Mode 1" is being customized (marked by the black circle); Simply click anywhere on the circular black/grey icon (marked with the red arrow) and you should be able to see these settings:
4. You're able to select from 3 presets for both the High Powered LEDs that are installed in the middle of the Firefly as well as presets for the overall flash pattern. You can also customize your own flash pattern by following the on-screen instructions underneath the custom flash pattern bar (grey-colored words).
Once you're done customizing the particular light mode, you're able to repeat these steps for the rest of the light modes as well as for the other Firefly lights that are paired.