Hi @James Waweru ,
I understand what you said, when we create a "Project Management" site template, there will be a taskbar/pane on the right side of the site home page, which contains web parts such as Countdown timer.
It is recommended that you first check to see if someone manually deleted the right section.
Page details in the Home page->Version history->Whether there is a deletion or modification record
I haven't been able to reproduce your situation, as a workaround, maybe you can manually add vertical section on a SharePoint modern page(Just like the rendering you expect).
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