I want to add red light and green light indicator on Opportunity page layout. If opportunity is in On-Hold stage then it should be Red else green. where can i get image file? and how can i show it in page layout. Please help.
You can use a formula field to show the images stored in Documents. Please see the below SFSE and Salesforce Help link to get a idea on this. Hope this helps.
Salesforce Help Link - https://help.salesforce.com/HTViewSolution?id=000007604