Here are the steps to install Alertus notification software for Mac OS computers.

• Download the Alertus Desktop client software from this link: http://web.hec.ca/aide/fichiers/alertus/alertus-desktop-osx.dmgweb site
  
  
• After the download, you will get a pop-up to start setup: double-clic on alertus-desktop.pkg
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• Click Continue, then Accept, then Install
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• Click Accept
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• A system window will confirm the setup is complete
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• Once the setup completed, an Alertus icon will show in the menu bar (top-right) to confirm its running:
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Sample of an Alertus notification

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