Infinite scroll for Ecto associations

I struggle on seeking the best way to add an infinite scroll for the association. The common way is to do it using temporary assigns but I’m not sure that it will be helpful in my case. What I have is the array of structs, let it be statuses (%Status{}). Each status has a number of associated users (which I preload). So, on the page, I display the columns with statute’s name and information about each user. Code from template looks like this:

<%= for status <- @statuses do %>
  <%- %>

  <%= for user <- status.users do %>
    <% %>
  <% end %>

<% end %>

Users’ cards have a scrollbar, so I want to add here an infinite scroll. What is the best way to append new users?