Right-click the selected files and choose "Add to archive..." . Configure: In the window that appears: Change the "Archive name" to lathin.rar . Ensure "RAR" is selected as the archive format.
Visit RARLAB to download the version of WinRAR that matches your system (32-bit or 64-bit). lathin.rar
RAR files are preferred over standard ZIP files in several scenarios: Right-click the selected files and choose "Add to archive