Spatialising TGrains with PanAz

Questions
1

what would be the simplest way of embedding the TGrain method inside the PanAz method here?

b = Buffer.read(s, Platform.resourceDir +/+ "sounds/a11wlk01.wav");

(
{
    var trate, dur, rate;
    trate = MouseY.kr(2,200,1);
    dur = 4 / trate;
    rate = Dseq([10, 1, 1, 0.5, 0.5, 0.2, 0.1], inf);
    TGrains.ar(2, Impulse.ar(trate), b, rate, MouseX.kr(0,BufDur.kr(b)), dur, Dseq([-1, 1], inf), 0.1, 2);
}.scope(zoom: 4);
)

{PanAz.ar(4,PinkNoise.ar(0.2),MouseX.kr(0,2))}.scope;
2

It’s easier to think the other way round: TGrains supports spatialising grains via its args numChannels and pan, which mimic PanAz syntax.
However you’re free to pan a mono or n-channel signal from granulation with PanAz. With an n-channel granulation signal to pan you’d need n PanAz then as PanAz doesn’t support that kind of multichannel expansion.

There is also XFadeRotate and related from wslib, see this thread for a discussion: