Post installation, you will need to configure the extension; follow below steps:-

Integrate

• In Salesforce Marketing Cloud, select the Data Extensions area.

• Import user data into the appropriate Data Extension, ensuring it includes information such as names, mobile numbers, and country codes.

• Use the filter options to segment your data as required by your marketing strategy.

Create Messaging Templates

• To create a new message template

• Go to the Campaign tab

• Select Message Templates, and then Create New Template.