Webpage creation/renaming

How do I get the program to name the main page for the web index.html instead of wd.html? I have found all kind of settings but not how to change file names.

under control panel, webfiles/web page setup
you can set the station name there

or if you are using the customise internet and file creation override setup
(recommended to use that)
you can set the remote file name there too, for the file you are uploading that you need to change the remote file name (in the upload settings)