Visual Studio Extension

You need Visual Studio 2019 to install the Visual Studio extension.
The Visual Studio extension is used to attach the Visual Studio debugger to Simulate processes. You need it if you want to do debugging through Visual Studio.
Use the SDK Installer to install the extension. By default the installer will place the extension in:
C:\Program Files (x86)\Hadean\Aether Engine SDK\Extensions\VS Extensions
Quit Visual Studio before continuing
You can change this location in the installer. Once the installer finishes, navigate to the location and double-click the file Hadean.Aether.SDK.VisualStudio.vsix this will add a "Hadean Toolbar" option to the context menu on your Visual Studio 2019 toolbar.
See debugging simulations for a walkthrough of using the Hadean Toolbar to debug an Simulate simulation.