When you first install the Chroma™ software, you have access to all the basic options and settings to get your printer calibrated and to complete your first print. When you're ready for some more options, you can access the advanced settings by going to Tools > Enable Advanced Settings.
Once this option is selected, you'll be able to change the Heat and Compression Factor and Transition options.
Heat and Compression Factors change the amount of time that the splice is heated and the pressure between each piece of filament. Read more about how this can help with splice quality here.
Transition options allow you to select between transition towers and side transitioning, both used when switching between different colors or materials. You can learn more about the differences here.