OK. I tried the Multi Mic as a pointing device. I think one has pretty decent “unidirectionality” now to a tilt of about 45 deg or so, at least. I tried the pointing under two different scenarios.
I sat at the kitchen table with my wife a couple of feet away from me. I had her put her iPhone down on the table a few feet to the side playing a talk podcast fairly loudly. I had bass set at - 2 dB, mid-tones at about + 4 dB, and treble at about +6 dB. Turned off “Surroundings” (external HA mics). At noise suppression at CONSIDERABLE, wind reduction at 0%. Even though I could still hear the talk podcast vaguely to the side, her relatively soft high-pitched voice came in distinctly. I guess if you don’t have very good WRS or do very poorly with speech-in-noise, you might not do as well. I definitely have a speech-in-noise problem but it is relatively mild.
The Multi Mic performed even better when used next to a roaring Jenn-Air stove top exhaust fan because that is a relative droning noise that the ReSound noise suppression algorithm can very effectively subtract out of speech. My wife stood a few feet away from me and by pointing the Multi Mic in her direction at about a 45 degree angle, her voice came through very clearly to me with a much-reduced drone of the Jenn-Air in the background. As a “control,” when I lowered the Multi-Mic to a perfectly horizontal position, the Jenn-Air noise streamed much more strongly to my Quattro’s. So in the case of a repetitive noise, I was getting both the benefit of some directionality from the Multi Mic and noise suppression from the Quattro firmware.
So if you can work by tilting the Multi Mic on a lanyard or holding it gripped in your left hand as you write with the right or maybe you could have a holder on a computer monitor that you just park the Multi Mic in if you need to type at a keyboard while addressing a customer. Since I imagine that you fetch and put lots of other things while you deal with customers, that with training, if carrying a Multi Mic on your person doesn’t work, that you could just place it and remove it from different objects preconfigured with holders. Or if you wear a white coat that has pockets, you could clip the Multi Mic to the inside of a side pocket (so if the clip comes loose, it falls into the pocket, not onto the floor). Then with your hand, as you’re doing something else, just pull out the Multi Mic as you need it and hold it pointing in the direction of a customer or place it on a preconfigured holder on a register or monitor, etc.
Don’t know how well this will work for you. Just suggesting it as an experiment to try. The audio talk podcast and the kitchen fan were both VERY loud and I was still able to hear my wife clearly - so perhaps there’s hope it can work for you. If there is other stuff going on in your work place, like overhead speakers broadcasting announcements, store specials, maybe you could ask the management to accommodate your workplace as getting prescription advice right and providing the right answers to patient questions, etc., is pretty important. If you have normal hearing co-workers who find the pharmacy work space too noisy, too, maybe they could support you.