MatthewWagster​ - both the M365 Companion Apps and the M365 Copilot App deployment settings are in the Microsoft 365 Apps admin center (config.office.com), under Customization | Device Configuration, then select the Modern Apps Settings tab. You will see default deployment configurations for Microsoft 365 Companion apps and the Microsoft 365 Copilot app. Both of these have tenant-wide settings to enable automatic installation. If you have a separate team managing your M365 admin centers, you will need to work with them to ensure these policies are configured the way you need for your organization.