I reposted the picture. Hopefully you can see it now. I changed the background map so you could see the hydrants better, but the yellow waterline does not standout with this particular basemap. Normally the aerial is behind it.
No, I do not have Server. I try to keep this as simple as possible. We're a small outfit (15 employees) and couldn't justify utilizing server financially or with my limited knowledge. I felt good I made it this far.
It's been a while since I did this, but I'll try and piece this back together. When I set that layer up in ArcMap, I created a Domain called HydrantInsp and added the previously mentioned categories:
Green=good
Orange=marginal
Red-repair
Blue=replace
Gray-inspect
Yellow=<Null>
I left one of the inspection categories off in my previous post, and forgot to include NULL.
I added the Hydrant symbol in ArcMap and also the colors. I populated the layer with our existing hydrants. When I did that, they all were colored to NULL (yellow). But eventually all the NULLS should be inspected. Then they can be moved to Gray when they need inspected again. I then published that layer as a service to AGOL. The key for me to get the colors to work was creating the Domain HydrantInsp in the Inspection layer before uploading. I don't think you can create that Domain in AGOL, or you couldn't when I was messing with this last year. Maybe you can now. It changes so fast. The other thing I can't remember is if I had to go in and change the colors again once it was uploaded to AGOL and added to a map. I don't think I did because that symbol came from ArcMap and if you were to try and change the color, I think you would lose that symbol. I'm not 100% sure, but I just tried to mess with it and couldn't change the color without changing the symbol.
You mentioned a table. Are you talking about the attribute table of the hydrant layer? The only table (Excel CSV file) I have uploaded are our water meters. I'm messing with this currently. I want to upload a new meter file monthly because we are adding new meters and customers every month. AGOL give you the option to update that file with a new file that writes over the old one. I'm hoping this option then maintains the symbol and color for each of the meters. I have our meters color coded as well based on which tank services that meter. It helps visually when trying to figure out what tank serves what area.
I'm not sure I answered your question, but feel free to reply and I'll get back to you.
Travis