nRF52 Thingy with power profile kit

Hi, i want to connect nRF52 Thingy with nRF6707 power profile kit to measure the current acquire by thingy.

How to connect the thingy to power profile kit

And also i have one more external device with battery . i want to calculate the how much current taken by the device from that battery

battery volt                 (2.8 V - 4.2V)

Device operating volt (3V)