If you feel that Team Helpdesk toolbar has occupied most of your Outlook ribbon region, you can customize the placement of the toolbar.
Go to Team Helpdesk Agent > Personal Settings panel > User Interface. And under ‘Placement of toolbars in Outlook’ section, choose the appropriate location of the Team Helpdesk toolbars/ribbons.
In Explorer Window: First Placement
In Explorer Window: Last Placement
In Explorer Window: Use a dedicated tab
In Inspector Window: First Placement
In Inspector Window: Last Placement
In Inspector Window: Use a dedicated tab
In Inspector Window: Hide Toolbars in Inspector Window
This option will not show the Toolbar of Team Helpdesk in the Inspector Window.