RE: How to add a customized display list in contact form?
Hi Mitmog4Ever,
Not using text field to store number, you can create a new entity for uniquenumber and build 1:N relationship with contact entity, then you can add a lookup field to the contact form, which can store uniquenumber value and show related contacs.
1.Create one new entity--Unique Number:

2.Build 1:N relationship with contact entity.

3.Create a new quick view form for new entity, and add one sub-grid to show related contacts.


4.Open one contact form and add the lookup field and quick view form into it.


5.Save and publish all customizations.
6.Test:

Regards,
Leah Ju
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