By the help of this document I got to know how to override the files https://docs.revenera.com/installshield28helplib/helplibrary/IDlgFileProp.htm#ref-dialogboxesa-m_694013026_wp1157. This case is when the files are not dynamically linked, but is there any way to override the folders and files which are dynamically linked or not either of the cases would be helpful.
