Configurations required:

- Change the API effective URL of both APIs (AmazonLexRuntime_SignedPayload and AmazonLexRuntime_UnsignedPayload) to the one that applies to your bot.
Check the Amazon Lex endpoitns and quotas page (be sure to check the table for V1 service runtime endpoints).

- Set the site properties:

• AccessKey - access key of your IAM user
• SecretKey - secret key of your IAM user
• RegionName - region where your bot is, for example, "eu-west-2"  
• ServiceName - name of the service, for Amazon Lex, the service name should always be "lex"

Other steps required:

- Create an AWS Account if you don't have one yet:

• How to Set Up an AWS Account and Create an Administrator User

- Exercises to get you started on how to use the Amazon Lex console:

• Getting Started (Console)

To use the example UI, set the site properties:

• BotAlias - The Bot Alias as is defined in Amazon Lex console
• BotName - The Bot Name as is defined in the Amazon Lex console
• BotNameToDisplay - Friendly bot name to display on the chat screen