Both Red Alert and Yellow Alert are fully customizable. You can pick and choose which safety features you want each Alert to trigger in the Emergency Button Settings.

By changing your Emergency Button Settings, among the few different settings you can change are who is notified in an emergency and if you want the police called, just to name a few.  Every setting in Ulzi is fully customizable.   

To change your settings, click on the tab with three lines, and click on the "Settings" option.  Then click on the Emergency Button Settings option and customize your settings.