
There are no requirements towards the board layout for the SD Memory module.
For the WLAN module, the area underneath the internal antenna should be left free from signals, ground planes or components.
Important for the PCB Layout is the decision for what type of receptacle is used. Recomended are precision type stripe connectors. Force fitting connector receptacle can also be used.
Find here a EAGLE Layout Tool library element for the Avisaro module.