AETHER-3597 Describe how to create / edit dashbaords in AiaB

Change-Id: Ia1e4c7af8ee3a26ae7748559668976744a6b49ea
diff --git a/developer/aiabhw.rst b/developer/aiabhw.rst
index 01711fc..6cdf3dc 100644
--- a/developer/aiabhw.rst
+++ b/developer/aiabhw.rst
@@ -333,6 +333,14 @@
 The dashboard shows whether the eNodeB is connected to the core, how many active UEs there are, and the
 uplink (Tx Bitrate) and downlink (Rx Bitrate) throughput at the UPF.
 
+To create a new dashboard for Aether, you can login to Grafana as user `admin` with password `prom-operator`.
+You can also modify an existing dashboard by making a copy of the dashboard and editing that.  Note that any
+dashboard changes will be lost if Grafana is restarted; if you want to make your dashboard more permanent, you can
+save its JSON to a file, add the file to directory `aether-in-a-box/resources/4g-monitoring`, and edit
+`kustomization.yaml` in that directory to add the file to the ConfigMapGenerator block.  After these
+steps, re-running `make monitoring-4g` should install the dashboard in a ConfigMap and Grafana should
+automatically load it.
+
 Troubleshooting
 ---------------