For more, see GeoSync Imager, Attach Image to Shapefile, Images
Attach multiple images to a map feature by linking to an external database table.
To use:
Add a tab labeled Photo, Image, etc...
Table to be attached must have a field which can be linked to Shapefile (i.e. MUID) and a field called either Photo_ID or Image_ID (Field Data Type: Text).
To add images from Identify tool:
Identify desired feature.
Select Image, Photo, etc... tab.
Select Add Record from Identify toolbar.
Enter name of file to link to without extension.