Deleting text at two pages

Hai,I want to delete the text in the heading of these pages: www.franciscus-parochie.nl/agenda-parochie/event/2855:eucharistische-aanbidding   and www.franciscus-parochie.nl/agenda-parochie/category/4:vieringen . The text starts with 'Kies' and ends with 'locatie'.
It only has to be published at this page: www.franciscus-parochie.nl/agenda-parochie .
In which files can I find the code for this? Or can you help me?

Hi,

I checked the pages. The text appears to be the JEM menu item's Introtext, not text that belongs specifically to the event or category.

JEM also outputs that Introtext on the Event and Category views, which is why it follows you when opening an event or category from the main agenda page.

I would not edit the JEM core files directly, because those changes can be lost after an update. The clean solution is to create Joomla template overrides for the JEM event and category views and remove only the Introtext block there. Leave the eventslist view unchanged, so the text remains visible on the main agenda page.

The relevant JEM templates are:

components/com_jem/views/event/tmpl/default.php
components/com_jem/views/category/tmpl/default.php

//
in backend you can use the Joomla template manager to make overrides