Detail section with several fields and records in the deal form

Detail section with several fields and records in the deal form

Hello all.
I would like to know if is possible to create a detail form with custom fields linked to the deal form, and how.
The form will have some custom fields(6-8). The most importants among them are numeric and dates.

I will need to create a report where to use those numeric fields to be summarized.

Thanks for your answers.