title: In an Azure graph/chart, can I add a constant line to indicate a target?
body: <p>I am using an Azure web application (app service), storage account and Applicaton Insights. I have been able to make a graph/chart of the availability of my application (Azure Portal -&gt; app service resource -&gt; Health check -&gt; Metrics -&gt; Save to dashboard).</p>
  <p>My boss asks me to add a constant red line at 99% to indicate our service level target. I cannot figure out how to do this. Is there a way to add such a constant line to a graph, either from the Azure Portal or by editing the ARM/Bicep templates directly?</p>