To begin, login to the admin console (https://admin.punchalert.com) and navigate to Admin Settings ->Settings -> Categories. The category settings page lists all categories for emergencies, announcements and tips:
Once you are on the category page, find the category you would like to set an icon for and click on the gear icon in the last column of the grid. This will navigate to the category detail page:
Right when you land on the category detail page you will be presented with the icon grid. The icon set that is presented depends on the category type (emergency, announcement, tip). To set an icon or update the icon, click on the round circle next to the icon you would like to use and then click the blue button immediately under the icon grid titled 'Save Details':
If a user is not a superadmin for the organization, but is an emergency, announcement or tip administrator, the categories are still accessible from the individual module settings in the admin console.
In the near future you will be able to upload and use your own icons.