Hey there,
There is no setting to do it.
You can paste the following custom CSS at
Backend > EasySocial > Themes > Custom CSS and see how it goes:
body #es.view-events.layout-item .es-profile-header-nav__item .es-profile-header-nav__dropdown-menu li:first-child {
display: none;
}
Just make sure that the participant item is the first item of the dropdown.
Do clear all of your caches before you see the changes.