docuseal/app/views/start_flow/show.html.erb

You have been invited to submit flow <%= @flow.name %>
<%= form_for @submission, url: start_flow_path(@flow.slug), data: { turbo_frame: :_top }, method: :put do |f| %>
  Provide youe email to start
  <div>
    <%= f.label :email %>
    <%= f.email_field :email, required: true %>
  </div>
  <%= f.button button_title %>
<% end %>