Hi,
Please I need help, as per this post (https://community.esri.com/thread/185188-on-screen-widgets) in this forum. I followed the steps to add more placeholders for the widgets but still failed. I want to add custom widget - layer toggle and it work greatly for the pre-added 5 place holders in foldable theme.
I tried in both locations config files.
This is my WAB App in content items folder , it has a config file which is little hard to edit since it shows as a straight line in notepad ++
1. C:\arcgisportal\content\items\f12d5d8f732a4fda9adf425c648b5636