You can Insert a Text box or a Collapsible group on this page below this.
You can also create a new entry on the Say subpage by clicking on Pages (below the blue Publish button) and then on the three vertical dots next to the "Say" page in the list of pages, and select "Add subpage". You can simply type a question as the title of the new entry, or you can make the new subpage of Say as elaborate as you need to.