Permission persistance for new files for a particular users

Story: Setting permission for directory for a particular user

Usually what we do when we want to give permission to folder (lets say our users name is abc for this example and directory name is test):

chown -R abc test

Problem: Does not set the permission to newly created files

Solution: setting the setgid bit so that any new file's (in test) owner is also user abc

sudo chmod -R u+s test