The LANSA Composer Server Setup wizard asks you to choose the website in which you wish to define the virtual folders used with LANSA Composer's web features.

Website name is the name that will be used to create a website in IIS.
Web Port determines the binding IIS will use for the website that will be created.
A virtual folder (in this context) is a means of instructing Microsoft Internet Information Services (IIS) to re-direct a component of the URL used for an incoming web request (the "virtual" folder) to a physical folder location, possibly outside the Microsoft IIS folder tree.
In particular, the LANSA Composer Server Setup defines two virtual folders:
C:\Program Files\LANSA\LANSA Composer Server\WebServer\Images
C:\Program Files\LANSA\LANSA Composer Server\Integrator\JSMCGI
In this step of the LANSA Composer Server Setup wizard, you can control the creation of the necessary virtual folders in two respects, as follows:
Of the websites chosen in the previous step, this specifies which is to contain the Images and JSM virtual folders.
Usually, you will have chosen not more than one website in the previous step - its name will be shown and selected here and you need make no further change.
This allows you to specify the name of a new virtual folder (default cgi-bin) or to choose an existing virtual folder that is used with the LANSA Integrator JSM Direct support.
In both cases the related LANSA Integrator files (jsmdirect.exe, jsmproxy.exe, jsmadmin.exe and their associated data, message and configuration files) will be installed in the JSMCGI folder under the LANSA Composer root directory.
If you select an existing virtual folder, the related Integrator files (jsmdirect.exe, jsmproxy.exe, jsmadmin.exe and their associated data, message and configuration files) will then be copied into the physical folder the chosen virtual folder is mapped to.
When you have completed your choices, click Next and continue with: