Daniel had an interview with roseberg where he said he doesn't bother with that stuff much.In car cameras show whats going on with adjustments to bias.
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This is Hamiltons steering wheel and you can see the bias adjustments on the right hand side (below the PC button) and then if you watch his qual lap you can see him adjusting bias
This vid from 2018 shows it really well
Whereas if you watch Dan's incar there seems to be no bias adjustment
Hope that helps.
Doesn't at all explain what I was asking though, Force India don't have access to Renault's on board telemetry to see if the brake bias is changing without the driver flicking the button unless its showing up on the screen without the driver moving his hand.