How to customize page display type in Drupal?

Question

PHP

Hello!
Situation: There is a page with announcements on it, you need to add more text to it so that it is displayed in its entirety, but at the same time, the previous announcements have not disappeared anywhere. Is it possible to customize the display on the page in this way?
In my case, the text is displayed, but if you remove the previous announcements, and the announcements are displayed if there is no text.
Attached two screenshots.
1. Display settings on the page. (Shamanil with the items "Format=>Show=>Content and announcement" and with the items "Behavior in the absence of a result")

2. The page itself on which you want to place the text.

Answer 1

Add text through the header

Answer 2

Is the text dynamic or static?