Step 1:  Login into your dashboard, You would be directed to a page like this:

 

step 2:  

Click on Desktop Quick Setup.

Step 3:

Complete the following fields on the screen.

 You can get further explanation on the meaning of each field here http://pushenvoy.com/docs/user-guide/creating-your-first-application/ .

Step 4:

After completing the fields click on save changes.

 

An App Token would be automatically generated for you.