Add Field to hosted AGOL feature layer (Elections)

[JayJohnsonWashoeCounty]

With the help of ESRI's Matthew Twietmeyer I've deployed the election Management Solution and need to add a field to the ElectionGeography hosted feature layer (Election Day Metrics table).   I am the owner.  

I open the item details, go to Data, and select the Election Day Metrics table.

In both Table and Fields views I see no "Add" functionality as described here:

Add or delete a field—ArcGIS Online Help | Documentation 

Strangely, I am able to add a field to the ElectionResults hosted layer (ElectionResults table).

Any tips on how to accomplish this or why I don't see what I'm expecting here?

Thanks,

Jay

[JayJohnsonWashoeCounty · Accepted solution]

To finish this thread out for the benefit of others who may run into this issue, the problem was that I was being foiled by our corporate security. 

After working extensively with ESRI tech support and white-listing various domains, we reached a point where the required access exceptions to AWS were just too broad of an ask for our security team.

Ultimately I was successful by re-deploying the Solution from outside of our organization's firewall (via our public WiFi connection).

Jay

[ChelseaRozek]

I'm running into the same problem it seems. Why is the Election solution different? I can add Fields to other hosted layers. Did you ever find out what about Deployment makes it different?