How to add more into subpanels?

Hi,

Where is it determined which fields can used in the different subpanels under accounts?
Within the contact panel under account, I would like to make use of the field “first_name” and “last_name”, but they are not shown. It’s only possible to use either the “name” or “full_name”, which gives the full name.
I would like to separate the first name and last name in different rows.

Is this possible? If so how.

See this

https://suitecrm.com/wiki/index.php/Developer_Guide#subpanels

and in general, anything referring to subpanels directory, or subpaneldefs.php files.