To create you will have to create an application here. When you have created the app, you will receive the client ID and client secret needed to connect. This is explained in more detail in Zemanta's documentation.
Pick the report you want. This article shows what dimensions and metrics are available.
Enter a comma separated list of all conversion metrics you want downloaded.
To get conversions with specific view and click attribution, append conversion window and attribution type to the conversion metric name.
Example: You have a custom conversion called MyGoal. To get conversion for 7 days click attribution you enter: MyGoal 7 days - Click attr.
Available conversion windows
Available attribution types
Note: View attribution is only supported with a 1 day window