Configuring the Visual Studio debugger to inject a dll?

Question

visual studio

Hello, starting to write my first dll - how can I make visual studio inject the dll into the process automatically
For example, in the dll project from gitHub, I found this configuration

<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
    <LocalDebuggerCommand>C:\notepad64.exe</LocalDebuggerCommand>
    <DebuggerFlavor>WindowsLocalDebugger</DebuggerFlavor>
    <LocalDebuggerAttach>true</LocalDebuggerAttach>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
    <LocalDebuggerCommand>C:\notepad64.exe</LocalDebuggerCommand>
    <LocalDebuggerAttach>true</LocalDebuggerAttach>
    <DebuggerFlavor>WindowsLocalDebugger</DebuggerFlavor>
  </PropertyGroup>

Where are these settings actually stored?