The Batch Editor Widget in the Web App Builder currently does not allow the user to deselect individual features from the selected layers (if you're selecting by area). There is a table in the sidebar that shows the selected layers and allows the user to deselect specific layers, but not features. It would be really helpful if there was a features table below the layers table that allowed the users to deselect features.
Is there a way to accomplish this? Either through AGOL or with the developer edition?