Yes, you can edit the contents of any page in your members area through the file manager
From the file manager go to the uploads/adminpages folder (there is a quick link in the top right).
There you will see html versions of all the php pages in your system's members area which you can edit to change the appearance of the php pages in your software members area.
A. To make a link open in new window, follow the following instructions
Select link text or click somewhere inside link text then click the chain link icon on WYSIWYG tools panel.
In Insert Link popup, select new window from target drop down then click ok.
Click save changes to apply new changes to your page.