I have to create new tab in opportunity to allow item details .
I am creating New button in the custom tab using list modification form as shown below.
Using list modifcation form the quick create screen is expected to come here.
When I followed these steps,
1) I din't get how to add fields from data model into the list modification form
2)I am getting dump when I click on New button in the tab when launching opportunity.
And the dump is not clear for what reason it is occurring.
Can you please help?