Add a function for my existing Dagger 2, Rxjava2 and VIPER App

I have an android app The xml design in android studio and api is ready, you just need to add in the functions, I want to add these 2 pages (this is design not source code) [login to view URL] you need to fix login and add these pages: before come to this page need to fix create event API to get event ID, 1- chat page, it is not live chat, it is like inbox you need to get the data from server every 3 seconds when user is in this page by making API call, and 2 more api call for create chat message and mute 2- album page, you need to make one API call to upload image and get name, another api call for passing image to server, and some other api call for create comment/delete comment and ...