Mutsy duo Rider and question about buggy boards and m&p 03

[alfiemama]

Hi can anyone, tell me a bit more about this pushchair? Can the duo seat click on and off easily and does it fit under the pram?

I am looking for something that converts into a double but when where out and about, so if toddler gets tired, I can just click on a seat.

Also, I have a mamas and papas 03 sport already is there a buggy board that would fit this, and will the handle extend (I know you can change position but would need it longer)

Thanks