To enable the Our Files app, go to the Admin pages of your site, then Content Management -> Applications and in the list enable the Our Files app.

(You can rename it from Our Files to something else if you prefer)

In here you can create folders (e.g., Minutes, Agendas, etc) and upload files to each folder. If you set the permissions you can also allow your members to upload files.

Read more about the Our Files app in the documentation.

Thanks

Joe