This page will explain how to add a feature layer from a file to a Collector web map in ArcGIS Online (AGOL)
In AGOL, navigate to your Group page

Press the "Content" tab in your Group
Find and select your Collector Map (Organization Name)

Press the "Open in Map Viewer" button

See the Map Viewer with the Collector Map (Organization Name)

Press the "Add" button

Choose "Add Layer From File"
Note: There are different options available, including, from layers

Press the "Choose File" button. Note the rules for files in the splash screen

Press the "Import Layer" button

Symbolize, or stylize, the layer


Press the "Save" button
