To delete an event from within the Tend Secure or Tend App please launch the app from your mobile device. Once logged in, go to your events (middle button on the command bar) and tap on the ... to the right of the events as shown below:
This will open the modal window below from where you can manage the individual event. If you would like to delete more than one event tap on Bulk Delete. This will allow you to delete all events for a day or for a camera.