To setup Visualforce pages, perform the following:
Navigate to Setup.
Search for Visualforce Pages.
Click New.
Name your page something relevant to the object.
Remove everything in the Visualforce Markup tab and replace it with one of the data options below:
<apex:page standardController="contact" showHeader="false" sidebar="false"> <revcult:FieldHistoryExplorerComponent recordId="{!contact.Id}"/></apex:page>
OR
<apex:page standardController="contact" showHeader="false" sidebar="false"> <revcult:SecurityAccessExplorerComponent recordId="{!contact.Id}"/></apex:page>
Perform the following to add Visualforce pages to a page layout:
Navigate to a Record.
Add a Visualforce page.
Click the Edit Layout button.
The Page Layout is displayed. Select "Visualforce Pages".
Locate the new Visualforce page. Drag and drop it on to the desired location in the page layout.