Hi John,

Without the built-in SPPB module, you have to improvise:

1. For example, in J4: Content > Administrator Modules > +New > Custom
2. Set in "cpanel" position.
3. Inside content area in TinyMCE switch to HTML mode (Tools > Sourcecode).
4. And add HTML code with link (URL) to needed subpage, example:

<ul class="list-unstyled d-flex w-100">
<li class="quickicon">
        <a href="/URL">
            <div class="quickicon-info">
              <div class="quickicon-icon">
              <div class="icon-file-alt" aria-hidden="true"></div>
               </div></div>
          <div class="quickicon-name d-flex align-items-end">List of Pages</div>
         </a>
    </li>
        </ul>

now it's your turn.