2x2 cavity closures, pictures needed of setup

[Our_Valleys_build]

Hi I’m looking for the diagrams or explanations of how these 2x2 stops are correctly fitted around windows and doors with the dpc membrane around them. A cross section diagram would be handy if possible. NHBC standard would be fine. 

 

Timber frame With a 50mm air cavity and 100m block/stone work.

 

any help and advise would be great  

 

Thanks