# Must know-how of eleapi

- [Manage & Use Custom Attributes](/eleapis-resource-center/product-guides-and-training/must-know-how-of-eleapi/manage-and-use-custom-attributes.md): This page contains information about the custom attributes and how you can use them in eleapi
- [Call external APIs in your chat flows](/eleapis-resource-center/product-guides-and-training/must-know-how-of-eleapi/call-external-apis-in-your-chat-flows.md): This page contains information about how you can call external APIs in your chat flows.
- [Manging team roles & Users](/eleapis-resource-center/product-guides-and-training/must-know-how-of-eleapi/manging-team-roles-and-users.md): This page contains information on how can you can add new team members and you give them custom access permissions.
- [Send WhatsApp notifications using the eleapi APIs](/eleapis-resource-center/product-guides-and-training/must-know-how-of-eleapi/send-whatsapp-notifications-using-the-eleapi-apis.md): This page contains the Information on how can you send WhatsApp Notifications from your platform using the eleapi APIs