A threaded Manager class...

ManagerClassAct.cs

public class Manager
{
    private readonly AutoResetEvent _reset = new AutoResetEvent(false);
        
    private Thread _mainThread;

    public bool IsRunning => _mainThread != null && _mainThread.IsAlive;

    public Manager()
    {
        Start();
    }

    public void Start()
    {
        if (IsRunning)
        {
            return;
        }

        _mainThread = new Thread(Run);

        // Do your Setup

        _mainThread.Start();
    }

    public void Stop()
    {
        _reset.Set();

        // Undo your Setup
    }

    private void Run()
    {
        Log.WriteLine($"Manager Started, Thread {_mainThread.ManagedThreadId}");

        _reset.WaitOne();

        Log.WriteLine($"Manager Quitting Thread {_mainThread.ManagedThreadId}");

        _mainThread = null;
    }
}