Check “Enable Notification Alerts” to enable Vallum interactivity.
By default each alert expires after some time and answers automatically. Use the slider on this view to set the expire time. To define the automatic answer choose between “Block app for 30 seconds” and “Pass app for 30 seconds”. If you like you can enable a sound for each notification alert, just check the option and select the sound from the popup menu.
These options are bound to Vallum configuration.