Did you add the building block “ card action “ to the page Home_Web?
If not, do that first.
Then double click on the caption open page and change it to add training event. Secondly, select on click event.
Hello
I have the same problem. In Mendix Studio (V8.17.0) this action is not available. With Mendix Studio pro (V8.17.0.) I can select Create Object.