Hi,
I want to retrieve email address of selected lookup record and set into other field in crm 2013.
Can I do that from Business Rule or Process in crm 2013?
AFAIK business rules are entity oriented.You can`t retrieve information from a lookup.
In order to do that you need to make a retrieve(JavaScript /Plugin) to the record and retrieve the email field.
No, but you could use a Synchronous workflow.
Create a process on create or update where you do you stuff, and uncheck the "Run this worflow in the background"-checkbox
Best Regards Jens Egil Evensen