After you save a button, you can add it to a page layout.
To add a Conga Composer® button or link to a page layout:
Navigate to Setup > Customize > [Object] > Page Layouts and select the desired page layout.
From the Page Layout Properties screen, click or .
Drag your new button to the Custom Button area on the page layout.
After you add a button, open a record of this type in Salesforce® and click the button to run the solution in Conga Composer.