Thanks guys
It appears that attaching photos and their management in ArcMap is easier than Pro!
In ArcMap, there is no need to apply any codes
<a href="\\jamalnuman1\D\photos\CityCenter1.JPG"" target="_top">CityCenter1</a>, <a href="\\jamalnuman1\D\photos\Al Ersal.JPG"" target="_top">Al Ersal</a>
----------------------------------------
Jamal Numan
Geomolg Geoportal for Spatial Information
Ramallah, West Bank, Palestine