LT8471 Flyback 2-pair output ref circuit

I wanna use one IC to output 2-pair output by flyback circuit.

LT8471 is the only one that has two output and two voltage control pin(FB1&FB2). But there's no flyback circuit to refer in LT8471 website.

I wanna use 1to2 transformer(like Sumida CEP1311E) and FB1&FB2 to change my output voltage. So I use LT8471's LTspice model to draw an abnormal circuit as below.

I'd like to know how to correct the circuit to have a 2-pair output(VPP_1/VNN_1 and VPP_2/VNN_2) circuit.

Thanks.

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