365 "Team Site" file storage

Im having a look at Office 365 Sharepoint Cloud File Storage .

I setup a team site & added some test files & folders.

Whats wanted is cloud storage of all company docs , so using 'cloud' rather than a local server/NASThe 'team storage' would need to be the default storage in word/excel etc , so that docs arnt accidently saved locally etc.

In Word365 (online version of word) , there is no option to set "Team Storage" as a default storage option, or even add "team Storge" as a file storage ~place~ . Can I disable Onedrive storage for all users, to ensure that files are NOT saved there

Any general advice on making 365 Sharepoint file store the default & easily accessable in word/excell etc ?