I had read this forum article: https://www.boonex.com/forums/topic/Adding-icons-to-the-service-menu-on-top-right.htm
Then i wanted to delete the User Image Icon and the user name (which is already written above ???) , in order to have a regular menu item consisting of an icon (for example user) and then the link to profile of this user.
So you have to take the file extra_sm_thumbnail.html which you will find in your template folder
<div class="sys-sm-item-submenu-cnt clearfix">
<div class="sys-service-menu-profile">
<bx_if:show_thumbail>__thumbnail__</bx_if:show_thumbail>
<bx_if:show_profile_link>
<div class="profile_block"><a href="__link__">__title__</a></div>
</bx_if:show_profile_link>
</div>
__content__
</div>
and change to (comment out)
<div class="sys-sm-item-submenu-cnt clearfix">
<!-- <div class="sys-service-menu-profile">
<bx_if:show_thumbail>__thumbnail__</bx_if:show_thumbail>
<bx_if:show_profile_link>
<div class="profile_block"><a href="__link__">__title__</a></div>
</bx_if:show_profile_link>
</div> -->
__content__
</div>
Then enter the admin menu / service menu and take the PROFILE item. And in the ICON field enter "user" for the user icon of font awesome.