Each config file that you want to enable would require you to create a new .js file with the same name, based on the .example config..

config (required)

Base config options, such as port, moongodb host and dbname

ad-config

Config used for setting up the ActiveDirectory Authentication

Related resources: LDAP Query Examples            

appdir-config

Config used for setting up the AppDirect Marketplace authorization

azure-config

Config used for setting up the AzureActiveDirectory Authentication

excel-config

Config used for importing and exporting of excel files.

s3-config

Config for connecting to the S3 Bucket hosting

saml-config

Config for setting up the SAML Authentication (Single Sign-on)

dxf-config

Config file for the DocxFactory service primarily used for merging data and template to generate documents.