Lithium battery charge/discharge protection IC circuit diagram

Please explain the circuit diagram of the IC called AP9101C, which makes the charging/discharging protection circuit of lithium battery.

The circuit diagram below is a basic charge/discharge circuit diagram from the AP9101C data sheet.

Question 1

I think you can input the power supplied from the charger to p+ and P-. Where should the power supplied by the battery be connected and used when the battery is discharged?

Question 2

Also, in the above circuit diagram, the MOSFETs connected to DO and CO have drains facing each other.

My knowledge is short so this seems like a nonsense schematic.

Please explain this.

For reference, DO outputs a signal when discharged, and CO outputs a signal when charging. Is written on the data sheet.

Question 3

In addition, I would really appreciate if you could explain how the current flows when charging or discharging.

We are well aware that buying and using a charge/discharge module is advantageous in terms of both economics and safety.

Please do not give such advice.