First make sure you have run one of the installers from the downloads page.
Instructions here:
Launch PowerPoint
If this is your first installation/Activation Dialog will automatically open:

If you have purchased and have registration codes:

Enter (or copy and paste) all registration codes into the large text box
Hint: you can copy and paste all your registration information at once, pptXTREME will find the registration codes within all the text
Click ACTIVATE
For any valid registration Codes found, the associated product will:
- Automatically install (check the box in the second column of the table)
- Install the Ribbon Toolbars, pptX Shortcut buttons and context (right-click) menus associated with the product
- Show your registration code in the 3rd column of the table
- Show your registration information in the 4th column
- Show how many licenses are associated with your registration code
- Create a link in the last column to remove the license from this computer

If you do not have registration codes and wish to operate as a trial version

Click the check-box in the second column next to the product you wish to try.
HINT: Doing this activates the 30 day trial for the selected product only. You can try each product separately on your own time-table, but remember, as soon as you click the check box, your 30 days for that product has begun and cannot be reversed.
For each product you start trial on, the associated product will:
- Install the Ribbon Toolbars, pptX Shortcut buttons and context (right-click) menus associated with the product
- Show your ‘Trial Installed’ 3rd column of the table
- Show how many days are left on your trial in the 4th column
- Create a link in the last column to purchase from our web site.

On February 17, 2015 /