title: Use fancyhdr in Lyx to position page number
body: <p>I am trying to customise the position of the page number to make them all appear at the bottom centre in Lyx. I plan to use the fancyhdr package in the preamble section of the document, but I get the following error msg:</p>
  
  <p>'LaTex Error: Command /footruleskip already defined'</p>
  
  <p>I guess it has something to do with me forcing a footnote formatting which may already be defined by fancyhdr package, as i have the following in my preamble:</p>
  
  <p>\setlength{\skip\footins}{0.8cm}</p>
  
  <p>Any suggestion how I get around this problem and set the page number position together with the footnote setting? Many thanks.</p>