Hi @milo last
Thank you for post!
I understand that you have Business Standard+ Defender for Endpoint Plan 1, but you are unable to see the Endpoint Option in the Settings.
Could you please try to Set up Microsoft Defender for Endpoint deployment by following the article and see if are able to see the below option by navigate to the Microsoft Defender portal. click on any of these options and wait for tenant to setup
Hope this helps. Do let us know if you any further queries.