Agora Extention

I need someone to help me install an extension and also install features, AGORA App. :

https://docs.agora.io/en/Real-time-Messaging/landing-page?platform=Android|https://docs.agora.io/en/Real-time-Messaging/landing-page?platform=Android
https://docs.agora.io/en/Real-time-Messaging/landing-page?platform=iOS|https://docs.agora.io/en/Real-time-Messaging/landing-page?platform=iOS

Below are the integration guidelines for Both IOS and Android

Android: https://docs.agora.io/en/Real-time-Messaging/rtm_android_run?platform=Android#3-integrate-the-rtm-sdk

IOS: https://docs.agora.io/en/Real-time-Messaging/run_rtm_ios?platform=iOS#3-integrate-the-rtm-sdk

And install an extension.