No, currently it is not possible. You can make the field either visible or in-visible. To hide/show fields, Goto Setup >Admin Settings > Field level security >select profile & module to hide/show fields For More refer Field Level Security.
Map Dependency Fields allows you to create dependencies between two pick list fields. For example, let us say you have a field called "Issue Type" and the options for this field is "Software, Computer, Printer, etc". Let us say you have another field ...