You can set your favourite format for DATE and TIME.
For DATETIME format is used DATE and TIME separated by space.

checkbox Move caret to the end of the executed command

If checked, the caret is moved behind semicolon (;) of current command after Ctrl+Enter.
It is useful if you want to run more multi-lined commands (you can place caret to the next command only by one hit of down arrow key).

If this option is not checked, the caret is not moved.
It is useful if you run one command repeatedly and you change some value inside of command.