add option to toggle single digital sign

app/views/esign_settings/show.html.erb

@@ -121,7 +121,28 @@
             <%= f.button button_title(title: 'Save', disabled_with: 'Updating'), class: 'base-button' %>
           </div>
         <% end %>
+      </div>
+    <% end %>
+    <% if !Docuseal.multitenant? %>
+      <% account_config = AccountConfig.where(account: current_account, key: AccountConfig::ESIGNING_PREFERENCE_KEY).first_or_initialize(value: 'multiple') %>
+      <% if can?(:manage, account_config) %>
+        <div class="px-1 mt-8 max-w-xl">
+          <div class="flex justify-between items-end mb-4 mt-8">
+            <h2 class="text-3xl font-bold">Preferences</h2>
+          </div>
+          <% if can?(:manage, account_config) %>
+            <%= form_for account_config, url: account_configs_path, method: :post do |f| %>
+              <%= f.hidden_field :key %>
+              <div class="flex items-center justify-between py-2.5">
+                <span>
+                  Apply multiple PDF digital signatures in the document per each signer
+                </span>
+                <%= f.check_box :value, { class: 'toggle', checked: account_config.value == 'multiple', onchange: 'this.form.requestSubmit()' }, 'multiple', 'single' %>
+              </div>
+            <% end %>
+          <% end %>
+        </div>
       <% end %>
-    </div>
+    <% end %>
   </div>
 </div>