Problem

Some of your users should use a custom Visualforce page, while others should use a standard Salesforce.com page.

Solution

1. Create a Visualforce page called conditionalAccountOverride.
   1. Click Setup | Develop | Pages.
   2. Click New.
   3. In the label field, enter Override the Account Page for Most Users.
   4. In the name field, enter accountOverride.
   5. In the description, enter This page will display for all users, except System Administrators, when they click the Account tab.
   6. In the editor, enter the following markup:

      			<apex:page action=
      			  "{!if($Profile.Name !='System Administrator', 
      				null, 
      				urlFor($Action.Account.Tab, $ObjectType.Account,
      				null, true))}"
      			  standardController="Account" 
      			  recordSetVar="accounts" 
      			  tabStyle="Account">
      
      			  <!-- Replace with your markup -->  
      				
      			  This page replaces your Account home page for 
      			  all users except Administrators.
      			</apex:page>
      			
   7. Click Save.
2. Set the page level security to allow all users to view the page.
   1. Click Security for the page you just created.
   2. Select all the profiles that will be using this page in the Available Profiles list and click Add to add them to the Enabled Profiles list.
   3. Click Save.
3. Create an override that directs users to your new page.
   1. Click Setup | Customize | Accounts | Buttons and Links.
   2. In the Standard Buttons and Links list, click Override for the Accounts Tab.
   3. Set the content type to Visualforce Page.
   4. From the Content Name drop-down list, select conditionalAccountOverride.
   5. Click Save.

Discussion

1. Create a Visualforce page called standardAcctPage.
   1. Click Setup | Develop | Pages.
   2. Click New.
   3. In the label field, enter Override the Account Page for Most Users.
   4. In the name field, enter standardAcctPage.
   5. In the description, enter This page will display for all users, except Marketing Users and Solution Managers, when they click the Account tab.
   6. In the editor, enter the following markup:

      			<apex:page standardController="account" extensions="overrideCon" action="{!redirect}">
      			  <apex:detail/>
      			</apex:page>
      			

      This page overrides your current Account home page. It uses a controller extension to test the user profile. If the user is a “Marketing User” or “Solution Manager,” they are redirected to a different page.
2. Using the procedure in step 1, create a second Visualforce page called customAcctPage:

   		<apex:page standardController="account">
   		  
   Override Account page for two profiles
   		  <apex:detail />
   		</apex:page>
   		

   This is the page that only the “Marketing Users” and “Solutions Managers” will see. They only get to this page through redirection.
3. Grant access to both pages for all profiles.
   1. Click Security for the each of the pages you just created.
   2. Select all the profiles that will be using this page in the Available Profiles list and click Add to add them to the Enabled Profiles list.
   3. Click Save.
4. Create a controller extension called overrideCon.
   1. Click Setup | Develop | Apex Classes.
   2. Click New.
   3. In the editor, add the following content:

      					public class overrideCon {
      					   String recordId;
      					   
      					public overrideCon(ApexPages.StandardController 
      						   controller) {recordId = controller.getId();}
      
      					public PageReference redirect() {
      					  Profile p = [select name from Profile where id = 
      								   :UserInfo.getProfileId()];
      					  if ('Marketing User'.equals(p.name) 
      						  || 'Solution Manager'.equals(p.name)) 
      						  {
      						   PageReference customPage =  Page.customAccountPage;
      						   customPage.setRedirect(true);
      						   customPage.getParameters().put('id', recordId);
      						   return customPage;
      						  } else {
      							  return null; //otherwise stay on the same page  
      						
      						  }
      					   }
      					}
      				
   4. Click Save.
5. Create an override that directs users to the standardAcctPage page when they click on the Accounts tab.
   1. Click Setup | Customize | Accounts | Buttons and Links.
   2. In the Standard Buttons and Links list, click Override for the Accounts Tab.
   3. Set the content type to Visualforce Page.
   4. From the Content Name drop-down list, select standardAcctPage.
   5. Click Save.
   When a user clicks on the Account tab, if their profile is “Marketing User” or “Solution Manager” the controller extension will automatically redirect them to the customAcctPage.