That may be easier said than done. It is a complex CMS (Content Management System), with complex CSS, and an even more confusing and complex array of inline styles.
All I can suggest follows:
The block "Members Dock" that is a against the right rail is an "iframe." Its positioning is controlled by an inline style. Find the page(s) having the member dock and...
1/ Insert this to enclose the page and the dock. Put it immediately above the inline style for the iframe. And modify the CSS positioning of the iframe as shown.
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<div style="width: 1050px; border: 1px solid red;margin: 0 auto" id="stuff">
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<div style="width: 1050px; border: 1px solid red;margin: 0 auto" id="stuff">
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<iframe style="border-width: 0pt; position: absolute; visibility: visible; width: 10em; height: 10em; top: -110px; left: -110px;" id="_yuiResizeMonitor" src="data:text/html;charset=utf-8,%3Chtml%3E%3Chead%3E%3Cscript%20type%3D%22text%2Fjavascript%22%3Ewindow.onresize%3Dfunction%28%29%7Bwindow.parent.YAHOO.widget.Module.textResizeEvent.fire%28%29%3B%7D%3Bwindow.parent.YAHOO.widget.Module.textResizeEvent.fire%28%29
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%3B%3C%2Fscript%3E%3C%2Fhead%3E%3Cbody%3E%3C%2Fbody%3E%3C%2Fhtml%3E">
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</iframe><div style="visibility: visible; z-index: 4; top: 205px; /* delete this----> left: 1309px*/ /* add this---->*/right:250px;" id="memberDock_c" class="yui-panel-container shadow show-scrollbars dock">
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Then close the div that was added, by adding </div> immediately before the very last
tag at the very bottom of the page.
Good luck and best wishes for success...