Please follow the instruction below to hide other filters:
1) Please don’t forget to take a backup of the file prior to any change.
2) Login to the admin dashboard. Navigate appearance ->editor menu.
3) Select Schedule Page Template (schedule.php) from the right side of the page listing.
4) Search for the following line (apx line no: 78)
<ul id=”schedule_filters” style=”display:none;”>
5) Find it’s closing UL tag (</ul>). apx line no:112
6) Please comment or delete all the content with in that UL element. ie from 79 to 111. And insert the following code with in that UL tag
<?php if (!empty($session_locations)) { ?>
<li class=”std-dropdown”>
<a href=”javascript:void(0)”><?php _e(‘Filter by days’, ‘vertoh’); ?></a>
<ul class=”dropdown-menu” role=”menu”>
<li><a href=”#” data-timestamp=”0″><?php _e(‘All’, ‘vertoh’); ?></a></li>
<?php foreach ($session_dates as $session_date) { ?>
<li><a href=”#” data-timestamp=”<?php echo $session_date->meta_value; ?>”><?php echo date_i18n(get_option(‘date_format’), $session_date->meta_value); ?></a></li>
<?php } ?>
</ul>
</li>
<?php } ?>
7) Save the file.