Make samba create files with usable group permissions

I am using Samba as my file server at home and connecting to it from two different users on their own macbook laptops. The Debian server has a share directory in /var/share that either myself or any other user on the system can connect to and create files or directories in. We all want to be able to edit each others files in addition to adding or removing directories and files as well, regardless of who created or owns them.

First, I created a directory in /var/share that is owned by one user, with group of “users”. All users with access to this share are members of the ‘users’ group on the file server.