Here is the manual how to setup extended presets in the LightControl app.
What is extended preset? This is a preset that allows you to control groups in addition to just bulbs in the regular preset. Also allow you to set the brightnes.
Extended presets are paid feature in the app. This manual is good also if you haven't unlock the extended presets. Just not all of the operations shown here will be allowed.Read more: Setting up extended presets