It should be noted that the Interview Portlet does not have a fixed size. A portlet's contents are within a DIV that is rendered by the portal; the height of which is determined by the content inside it while the width is determined by the enclosing container. In the case of the Interview Portlet, these are the enclosing DIVs that have been provided by the portal. The Interview Portlet window does not have a fixed size in (meaning that the size remains consistent as you step through the various screens) in Webcenter.
In Webcenter, when the Interview Portlet is added to a page that uses the Applications Page Template, the portlet window size is not consistent, but changes when stepping through an interview. Using the tool highlighted in the shot below, the container size can be set (size of the Add Content box); this will fix the fluctuation in size of the portlet window. It is also possible to set the size of the portlet itself using a similar tool which is just below the highlighted tool.
Note: The screen shown below is an example only and may not be the same screen that you will be presented with - however, the tools and method used to set the size, should be the same.
In Webcenter, the Interview Portlet's window size is affected by the page template being used. The window size is constant if we use either the Swooshy or the Globe page template.