Edit, I didn’t catch you might be using a phone. DSP functions are available to add etc, on the desktop and/or tablet UIs. Phones can just turn on/off existing DSP options.
Try bringing up Roon on a desktop or laptop and when you go to the DSP section you will see this option circled in red (As you will notice I did add Speaker Setup and remove the ones I don’t use):
Hello @waka_jawaka, and thanks for the question. Rugby is correct here, we recommend using a tablet or computer to customize DSP functions. A strategy that would work great here is building them as presets, at the top of your first screenshot you can see the option to enable/disable them from the phone.