Hello, you can fix it with code editing.
Add to form URL anchor and somewhere id for anchor.
e.g.
componets/com_booking/views/subject/tmpl/default.php row 49
<form name="bookSetting" id="bookSetting" method="post" action="<?php echo JRoute::_(ARoute::view(VIEW_SUBJECT, $subject->id, $subject->alias)); ?>">
add anchor #caltop at the end of URL
<form name="bookSetting" id="bookSetting" method="post" action="<?php echo JRoute::_(ARoute::view(VIEW_SUBJECT, $subject->id, $subject->alias)); ?>#caltop">
componets/com_booking/views/subject/tmpl/default_calendar_weekly.php add at the top <div id="caltop"></div>
