Does anyone know how to remove the complete wiper blade from the wiper arm when on the car? (350 super V8)

It seems there is a small spring clip. Do you push the clip down towards the screen or push the clip up towards the blade assembly and away from the screen?

On this Jaguar you can only lift the arm a few inches away from the screen, irrespective of the bonnet/hood being open or closed so I can't see.

I can't remove the whole arm as it seems very tight on the drive shaft.h and

This is the model with two different sizes ~ 18inch and 24 inch.

Thanks all.