I want a custom new field called "Organization" to auto-populate with "Account Name" related to the contact I add in my look-up field called "Class host":
To paint the picture:
Anne works at an organization called HAPPY.
I create a class/campaign and add Anne as "Class host" through my look-up field that feeds from "contacts". Then field "Organization" automatically populates to say "HAPPY", the account name = organization Anne works at.
How do I do that?
Thank you!
defaultFieldValues
as described here: salesforceben.com/salesforce-url-hacking-for-lightning-tutorial ? I would suggest you to edit your question to explain what you have tried so far.