OBDEleven and unknown channels, OBDEleven while driving

Hello, I have OBDeleven, as a Pro version. Car is a Skoda Superb 2 MJ12, 170hp diesel. I would like to achieve that my heater (Webasto VEVO, installed ex factory) does not work as often as a heater. I would like to have the heater work only at the push of a button. Switching off the heating function only works with the petrol engine, not with the diesel engine. In addition, I would like to control the heater after engine start. Unfortunately, there is no official Mögli I found in the net infos that the SH from 5°C no longer turns on as a heater. Some other SH control units have defined this in a custom channel. With my SH the number “5” is in the channel 20. So could fit. However, there is no description of the channel. 1) What could happen if I change the adaptation channel 20 from 5 to something else in the SH control unit (STG 18)? Can something get broken? Can I then return to 5 and Everything is like before? 2) Same question, but for other channels, not STG 18 related. Can you put a channel to something else, test it, then back again and you have the original state? At least I know of the byte 18 problem of the light setting, which you must not change, otherwise the light setting is in the bucket. 3) Is it safe to infect OBDEleven during the ride and control the live values (from the passenger)? Can OBDEleven get a little confused, so something pas What would not have happened without an adapter? I would like to check whether the SH starts at 5° or not and what happens if mentioned channel 20 is changed from 5 to 20, or on -10 or even -20. To do so, the adapter would be connected to STG 18 while driving. 4) Same question, but for other ECUs. Can you connect to any ECU and view the live values without anything happening? If I connect myself to the brake control unit in stand-alone condition The ESP lamp appears in the instrument cluster to go out again when the connection is disconnected. Is it safe to connect to the brake control unit, for example?