Download Connect V3 (Connext) VSIX Installer
In the "Development Team" teams channel, go to files
In the Connext Documentation folder download the ConnextTemplate.vsix
Go to downloads and right-click → open the file
Allow the installation to finish following any necessary prompts.
Open Visual Studio and Create a new project
In the templates: search for "Connext"
Select it and click next
I will use "OracleEBS" as an example of the RemoteSystem I am integrating with
Enter the name of your remote system into the project name/solution name
(i.e. Netsuite/Sage300/OracleEBS)

This will have created 2 new folders