Under 'General' you can change the units to measure temperature, your date format, set the number of Grow Room's you have and name your devices. You can also import/export settings and save your current settings locally.
Under 'Functions', you need to check each devices' checkbox that you've installed.
Some devices share one output so you can only select one device or the other. The software enforces this and when one is selected the other is automatically “greyed out”. If you want to select the greyed device, you must de-select the other one first.
After changing any settings, click the 'Save' button at the bottom-right of IntelliGrow.