Question… I’m having problems trying to add a value to an existing layer that has several drop down options. I’m using ArcGis online and can’t seem to get to the correct location to add an option for the drop down field. Please help!
If I understand you correctly you would like to add a value to a domain in AGOL. This link should help.
https://support.esri.com/en/technical-article/000012279
