You can configure the tabs that are visible by default at bottom of the dashboard. To edit the settings, login as admin and goto Administration > Configuration

Config-key Values Meaning
dashboard.show.myrooms 0 or 1 If the MyRooms tab should be visible or not
dashboard.show.chat 0 or 1 If the Chat tab should be visible or not
dashboard.show.rssfeed 0 or 1 If the RSS-Feed tab should be visible or not
rss_feed1 http-URL ATOM-Feed URL for the dashboard RSS Tab
rss_feed2 http-URL ATOM-Feed URL for the dashboard RSS Tab

Changes are immediately online, no need to restart anything.

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