display a submenu within a post

sorry i cannot see any improvement. I send you my screenhsots from installtion. Maybe i have done something  wrong?

Hello,

In the template options, try changing the type of the bottom menu (Menü für Kurse). Use the Standard Joomla menu and set it to display in horizontal mode.

Regards,
Milos

I'm unsure what you mean. I can't find the term bottom menu. I can find the following: Main Menu and Footer Menu.
I have attached two screenshots for you. I noticed that there wasn't a single check mark for menu affiliation, maybe that's the problem?

Hello,

Under Menus, it's probably named as Footer menu. So this is the menu that controls the bottom links. Change its menu type to the Standard menu.

Using two Drop-down menus on the same page can make Javascript conflicts.

Regards,
Milos

I think the settings were already ok, see screenshot

Hello,

I see now that you selected the same menu for both the top menu and Menü für Kurse (mainmenu). Therefore, two drop-down menus are initiated. You must select a different menu for Menü für Kurse.

Regards,
Milos