To add an Inline page on the object need to follow the steps:
- Go to the contact object and edit their page layout.
- Pick the section from the palate and drag it where you want to show the page. Provide the name of your section.
- Go to the palate and scroll for the Visualforcepages and drag the page DragDropForContactInline drop it on the newly created section.
- Hit the save button.