There is root ownership and root group applied to
/media/pandya/Ext4/* ("pandya" is user-name). To apply group "pandya" I run following command:
sudo chown -hR root:pandya /media/pandya/Ext4/*
Now, There is root ownership and "pandya" group applied to
/media/pandya/Ext4 and all sub files and directories.
But group "pandya" has only permission "Access files" (for directories) and "Read Files" (for files) for all sub directories and files.
So, How to apply full permissions ("create and delete files" to directories and "read and write" to files) to group "pandya" ? So-that I can fully access
and all sub directories and folders with "pandya" group.