Is there a way to edit the information added through a GeoForm, like:
Select the point
Delete or Update the info related to the point (tabular data and location)?.
The GeoForm application template is not designed to be used as a client for editing existing features.
Are you hoping to have end users edit existing features? If you might want to explore some of our applications for general editing.
Choose a configurable app—ArcGIS Online Help | ArcGIS
Check out crowdsource manager for managing existing data:
Crowdsource Manager | ArcGIS Solutions for Local Government
It really depends on the workflow. If you are looking for a QA/QC process to clean up the data, you could easily put the GeoForm feature layer into a Web App Builder application with the Smart Editor widget. This would provide a really simple, light weight application for a user to review and edit only certain aspects of the data that you want changed.
Retrieving data ...