Franky (@liedekef),
For the edit link, please see the documentation on how to use placeholders: https://www.e-dynamics.be/wordpress/category/documentation/3-installation-and-usage/ . Just use the mentioned placeholder(s) in your single event format.
Sorry, I didn’t understand where to specify this placeholder (in shortcode, in page…). Give more detailed instructions.
No it is not possible, unless you make your own admin buttons somehow.
Сan I make an event delete button directly from the database? How do I determine the ID of an event record in the database? This button is for only author event.