This feature is added in v18.06 for beta testing. We recommend our users to utilize it with a caution and keep us posted about the experiences with it.
A single shapefile can be overlayed over the baseline map in a geography type question. This shapefile must be placed into the folder TheWorldBank/Shared/ShapefileCache/ and must contain all three mandatory shapefile components (*.shp, *.shx, and *.dbf) accompanied with the *.prj. Consult the ESRI tools and documentation for the structure of the shapefile and the role of these components.
The number of points in the shapefile may vary: it can be as simple as four corners of a rectangular enumeration area, or be a complex outline of the coastal area.
Once the shapefile is present on the tablet, it will be automatically overlaid over the baseline map, and the interviewer will have a visual indication whether the choices he/she is making in the geography question are within or outside of the area of interest.
As of v18.06 the shapefiles are not centrally managed at the Survey Solutions Headquarters.