Convert a Button to a Formula Field Using the Conga Formula Builder
Unlike a Conga Composer button or link which contains a URL with various parameters to define your merge operation, Conga Trigger uses a formula field on your Master Object to host those instructions. Use the Conga Formula Builder to convert a working Conga Composer button or link into a Salesforce formula field used by Conga Trigger.
If you prefer to build your formula field manually, please see How to Manually Convert a Conga Composer Button into a Conga Trigger Formula Field.