Using PNP as OFF switch
To switch on any transistor PNP/NPN, you need to forward bias the base emitter junction

so for PNP emitter is +ve and base is -ve so to forward bias connect emitter to +ve supply and base to ground with resistor (see attached image)

similarly for NPN connect emitter to GND and supply +ve voltage to base

 

Note: the explanation are purposely made simple for understanding purpose