Creating or updating new Pages and Sub-Pages in MinistryPlatform can be done using your setup area. Your IT SPoC has access to this area, so please consult with them to discuss any changes or additions needed.
Views and Sub-Pages are a helpful way to make Pages user-friendly. See Views and Sub-Pages.
Before you begin, you should ask yourself an important question: Do I need A New Page? 
During a break-out session at MPUG 2015 Kevin McCord shared this document as a quick reference for adding new pages: Custom Fields.pdf