I can view related records in a popup using the Map Viewer. For example, using the service in my previous message, I built a popup to show the information from a related table.
var rec = First(FeatureSetByRelationshipName($feature, "DCGIS.ITSPE", ['BIDNAME', 'BIDTOTALDUE', 'BIDCOLLECTED', 'BIDBALANCE']));
if (IsEmpty(rec.BIDNAME)) return 'Not a BID';
return `${rec.BIDNAME}
• Total Due: ${Text(rec.BIDTOTALDUE, '$#,###.00')}
• Collected: ${Text(rec.BIDCOLLECTED, '$#,###.00')}
• Balance: ${Text(rec.BIDBALANCE, '$#,###.00')}`