We now have a couple of screens, but to switch between them, a manual interaction is required. While that's mostly acceptable for casual use, it would be hard to do if you wanted to display them on a large display for a helpdesk. Manual switching would soon get annoying even if you simply had Zabbix open on a secondary monitor all the time.
Another functionality comes to the rescue—slide shows. Slide shows in Zabbix are simple to set up, so go to Monitoring | Screens. Why a screen page? Zabbix 3.0 changed the slide show operations to be the same way as maps and screens by moving both viewing and configuration to the monitoring section. Slide shows didn't get their own section, though; to access them, choose Slide shows from the dropdown in the upper-right corner. Click on the Create slide show button. Enter First slide show in the Name field, and click on the Add control in the Slides section. Slides are essentially screens, which is what we can see in the popup. Click on Local...