Program.cs

// Override/extend OpenTelemetry configuration
builder.Services.ConfigureOpenTelemetryTracerProvider(tracing =>
{
    tracing.AddSource("YourCustomSource");
    // Add custom processors, exporters, etc.
});

builder.Services.ConfigureOpenTelemetryMeterProvider(metrics =>
{
    metrics.AddMeter("TplDataflowDemo");
    // Add custom instruments, views, etc.
});