How can be able to update the field on the basis of selection of value from a picklist value in an object?

Hi Mohit,

You can done this by various methods like:

• You have to create a second picklist which has some choices like choice 1, choice 2 and then make it dependant on the selection picklist so that if in selection picklist option 1 is selected, choice 1 is the only option.

if(ispickval(field name, "option 1"), " choice 1","None"

• Setup>Create>Workflow >Workflow Rule

  The Rule Criteria should be set as:
  Lead Stage EQUALS (Then put your stage)
  Add the workflow action (New Field Update) > Set it to update the date field you want populated > Use formula to set new value > Set the formula: TODAY()

Hope this helps you.

Thanks