Add new field in delegates Events


I want to add new field in delegate subpanel (event module) . I know that I have to add this field in these tables: fp_events_leads_1_c, fp_events_contacts_1_c, fp_events_prospects_1_c. My question is how to show in the subpanel

Another question, I want to add new status assistance in delegate status, How can I do that

Thanks in advance