Question to my ISP Programmer for ATtiny

Hello experts,
I bought the following ISP programmer to program my ATtiny84.
Does anyone know what is the function of the yellow jumper ?
The Chinese almost never include a description.

And how do I have to set my Arduino IDE ?
Is it Tools=>Programmer=>AVI ISP ?
And which pin mapping ?

Thanks and greetings,

Remove the jumper and it will self-power but buffer the I/O to match the target device.

Ok, thanks.
that means, if the jumper is plugged, the voltage supply is done via the programmer ?

And about the correct IDE setting here in the forum no one knows anything ?

has cleared up, it works now