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For now, we able to add a custom fields with type of text, number, picklist, etc. But there is not any option for Lookup field.

For example, In the employee form we add one picklist field department. In the department we wants to achieve the functionality that help us to create new department if it is not available in option set.
Category: General
STATUS DETAILS
Declined
Ideas Administrator

Thank you for your suggestion. After careful consideration, we’ve decided not to proceed with this functionality at this time.After careful consideration, we’ve decided not to proceed with this functionality at this time. This posting is provided “as is” with no warranties, and confers no rights.