Reading these instructions https://help.zoho.com/portal/en/kb/crm/integrations/microsoft/synchronize-with-office-365/articles/sync-meetings-contacts-tasks-with-office365#Synchronize_Zoho_CRM_Meetings_with_Office_365, it's not clear for me if every user in the organisation needs to do this to get the integration.

Question: do all users in the organisation have to enable this in their profile, or is it possible for the CRM Admin to do this and all users in the organisation gets it?

I have super admin rights. What other settings do I need to enable in the CRM for this integration to work?