To manage the deployment of our Add-Ins, we recommend using mail-enabled Security Groups. It is important to use this type of group, otherwise, the deployment using centralized deployment is could not be supported (learn more).For the basic organization, as per our best practice, we recommend using three different deployment groups:Deployment officeatwork DesignersMail-enabled Security Group name: Deployment officeatwork DesignersMembers: Base Template DesignersAdd-Ins: Designer, Uploader, Template Chooser, Wizard, Verifier, Content Chooser, Slide Chooser, Image Chooser, Mail SignatureDeployment officeatwork EditorsMail-enabled Security Group name: Deployment officeatwork EditorsMembers: Smart Template EditorsAdd-Ins: Uploader, Template Chooser, Wizard, Verifier, Content Chooser, Slide Chooser, Image Chooser, Mail SignatureDeployment officeatwork UsersMail-enabled Security Group name: Deployment officeatwork UsersMembers: All UsersAdd-Ins: Template Chooser, Wizard, Verifier, Content Chooser, Slide Chooser, Image Chooser, Mail SignatureRemark: As an alternative, for the basic organization, you can use different deployment groups 'Deployment officeatwork Add-in Name' for each add-in.