1. Just be honest. I have had no issues talking to GMs. They are well aware of our gameplay style and I have never had one behave unprofessionally toward me while multiboxing. As for players, you can try to respond to them in a civil manner if you have the time but there is no requirement that you acknowledge their presence.

2. Do not worry about trying to behave in a such a way as to not get reported. You *will* get reported. A lot. Unless you are acting like a bot or being a disruptive asshole or abusing a mechanic that is a known bug that they haven't fixed, you should be fine. The people I see complaining about getting banned are 99.99937% of the time doing one or more of the above. Don't be evil (and unlike Google, you can't hide douchebaggery behind plausible deniability).

3. You might get a better answer in the ISBoxer discord. That said, posting your profile will make analysis of your setup - and identifying problems therein - easier.