For building queries for maps on ArcGIS .com // ESRI gave me this
1. Open ArcCatalog
2. Create a folder called Locators
3. Right click in this folder and choose to create new Address Locator
*If this fails, you might have to Disable Back Ground Geoprocessing in ArcMap.
4. Once this dialog box is open, you�??ll set the locator type to �??General �?? Single Field�?? and reference the feature class you want to search on as well as the field to search
5. Do this for every Feature Class you want to search on
6. Once done, right click in the folder and this time choose to create new �??Composite Address Locator�??
Exercise outlining how to do this in the help
7. When creating the composite locator, you�??ll add the 5 locators you previously created.
8. Right click the composite locator and choose to share as a Service, and publish it to your Server
9. Visit your Rest Endpoint, and copy the GeocodeServer url
10. Follow this workflow from the online help to add the locator to your ArcGIS Online Organization
a. Set it as the top locator to use before you hit save