Yes it's a right royal PITA !!! There's about 7 speed clips that hold it in place. I found it easier to start in the centre at the top and pop the first one then work around to the bottom corners.
You may want to get some spare clips and a packet of Bandaids as your very likely to break a few and skin your knuckles in the process.
One day your life will flash before your eyes. Will it be a good show ???
You're talking about the ones to the sides behind the rear seat?
If so, you need to kind of pull up (as in towards the roof) and in (as in towards the centre of the cab) at the same time, or close to it.
There's some inner clips at the top part that need the centre pull first, then the bottom clips require the panel to be pulled up. Towards Centre first, Then up.
I found getting it back on way harder than pulling it off though - something for you to look forward to....!