Hi,
I have lookup field and lookup provide filter option with only primary field of that entity but i want to search or filter with other field also.
Thanks
Have a look at this blog, it describes the setup to allow searches into other attributes apart from the primary field. The described method is the same for CRM2013.
https://community.dynamics.com/crm/b/crminogic/archive/2012/07/19/lookup_2d00_multiple_2d00_field_2d00_search.aspx
Eric UNG [Senior Analyst Programmer :: Sydney, Australia]