Collabora Office 23.05 Help
You can specify settings for running a slide show in Slide Show - Slide Show Settings.
Specify whether a slide show starts with the current slide or with the first slide on Collabora Office - PreferencesTools - Options - Collabora Office Impress - General.
To start a slide show, do one of the following:
Click the Slide Show icon on the Presentation toolbar.
Right-click a slide in Normal view and choose Slide Show.
Press F5.
Under Windows, right-click the *.sxi or *.odp file in the File Explorer, then choose Show.