espocrm/application/Espo/Modules/Crm/Resources/metadata/app/templates.json

{
    "invitation": {
        "scopeList": ["Meeting", "Call"],
        "module": "Crm"
    },
    "cancellation": {
        "scopeList": ["Meeting", "Call"],
        "module": "Crm"
    },
    "reminder": {
        "scopeList": ["Meeting", "Call", "Task"],
        "module": "Crm"
    }
}