Go to the DMPTool
If you have previously used DMPTool after entering your WVU affiliated email account in the Sign in / Sign up" box and click "Continue." You should see an option to login through the SSO as shown below. If you are not seeing the SSO option please check your account information and make sure that West Virginia University (wvu.edu) is selected as your institution and that you are using a WVU affiliated email account.

If this is the first time your are using DMPTool enter a WVU affiliated email address (@mail.wvu.edu; @mix.wvu.edu; @hsc.wvu.edu) and click Continue

Fill out the account information including creating a password (use one other than your WVU account password)
and make sure to select West Virginia University (wvu.edu) as your institution and click Sign up

This will take you to the WVU DMPTool landing page. In the upper-right hand corner click on your name and use the drop down menu to select 3rd party applications

Click the "Link to your institutional credentials"

You will then be promoted to login through the SSO, or if you have already logged in on the web browser you will see the SSO login briefly run.
The next time you login to DMPTool you will see the option "Sign in with Institution (SSO)"