• Download extension from download page.
• Install extension (also see the Joomla! Install/Uninstall Documentation page)
  
  • Log into the Joomla! Administrator
  • Go to "Extensions / Install/Uninstall"

• Enter your FTP login details (if required)
• Click the "Browse..." button and find the downloaded file
• Click "Upload File & Install"

• Enable extension
  • Log into the Joomla Administrator
  • Go to Extensions / Plugin Manager

• Find extension in list (use the filter if needed)
• Make sure the Enabled column contains a green check. If it is a red-X, click to enable it.

By default Joomla! prevents some HTML from being inserted into articles (except for the Super Administrator). It is best to install sdMacros to solve this, but if you would like others to be able to insert any HTML (for example as part of a gCalMarkup template), you may wish change the default filtering (see Joomla! HTML removal article). The following procedure sets the blacklist filter so editors and above can add any HTML to articles. Again, please note that sdMacros can also be used to encapsulate HTML into separate articles to be included by any author into articles. If only Super Administrators create these articles (for example containing any gCalMarkup templates), this procedure is not needed.

• Log into the Joomla Administrator
• Go to Content / Article Manager
• Click on Parameters button
• Scroll to Filter Groups

• Select Publc Front-end, Registered, Author
• Check "Blacklist"
• Save

• Uninstall extension:
  • Log into the Joomla Administrator
  • Go to Extensions / Install/Uninstall
  • Click on Plugins tab
  • Check extension you wish to remove
  • Click "Uninstall"