Page Comparison

Before you proceed with the actual uninstall steps, you need to first delete the references made to the Salesforce Opportunity page layout.

To remove the page layout reference:

1. Go to the Setup page, by clicking on the Setup menu.
2. On your left-side, under the App Setup section, expand the Customize option.
3. Under this option, expand the Opportunities option and then click on Page Layouts.
   In Group and Professional editions, you need to click on Page Layout. 
4. Now, on the Opportunity Page Layout, click on the Edit link and remove the section you have added for Celoxis Projects.
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   Alternatively, in Enterprise or Developer editions, you can delete the layout itself if you had created a separate one. You will have to select a new layout for the replacement.

Once, this is done, you can proceed with the actual un-installation steps.

1. Go to the Setup page, by clicking on the Setup menu.

2. On your left-side, under the App Setup section, click on Installed Packages.

3. Click on Uninstall link besides the Celoxis app.
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4. On the Uninstalling a Package page, scroll to the bottom and 
   1. Select Do not save a copy of this package's data after uninstall. Click on the Ok button displayed on the message box.
   2. Check the option Yes, I want to uninstall this package and permanently delete all associated components.
      
   3. Click on Uninstall button.
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The Celoxis app will be deleted from your Salesforce account.