I was trying to follow along the tutorial for Salesforce integration to Redshift on https://www.astronomer.io/guides/salesforce-to-redshift/. I have successfully setup Amazon S3 connection on Apache-Airflow like the answer here. But there is no Conn Type of Salesforce. 
Does anyone know what the steps are to create a Salesforce connection on the Apache-Airflow UI?
Don't know if it helps but my Airflow is installed on an Ubuntu Amazon EC2 environment.
I figured it out. The trick is to leave the Conn Type empty. I started by filling out the Host, Login and Password. Then on Extra, I added a dictionary that had my login's security token. It will look like the screenshot below.

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