Right now, in Web Editor, we can only edit attributes on one feature at a time. There is a widget in Web App Builder called Batch Attribute Edits that allows you to select multiple of the same feature and edit its fields. We use this heavily in AGOL because we symbolize lots of features using domains and we will mass select features to change their symbology.
Web Editor can select features by the masses, but they need to add editing attributes by the masses before they completely phase out Web App Builder or else we will have to find a workaround. The Batch Attribute Editor did not make its way into Experience Builder and so we are still using Web App Builder for some Apps.
A workaround is to pull these hosted feature layers into ArcGIS Pro and editing them through the attribute pane, but this way strips our users who only use AGOL from making their own edits and pulls us away from our work.
