We are planning to expanding our product line to include larger configurations; a 4 gang model (U4) is expected to be released in early 2022. The iotty Smart Switch is currently available in 1, 2, and 3 gang configurations. You can split large boxes into smaller boxes to support locations with more than three switches in a single location but it takes work that will likely require the services of a professional electrician.
4, 5, and 6 gang configurations are achieved by installing two separate electrical boxes next to each other. For example, if you need to control 4 switches, you can have an electrician install two electrical boxes and put two 2 gang units next to each other. It is easiest to do this with new construction while the walls are still open. Doing this on an existing wall is a large project and requires opening the wall, installing separate boxes and then re-installing sheet rock, spackling, and painting.
IMPORTANT: In either case, it is important to remember to place the electric boxes far enough from one another so the spacing between the switch covers meets your desired aesthetic.