Directly goes to sessions window without main window

In the past version of WinSCP (5.5.3) I had this option:
On startup WinSCP shows directly the session window without the main window.
In this way I enter site quickly!
With the actual version, 6.1.1, I can't set WinSCP to have this behavior.
I tried changing the various settings options but without success!

Are you looking for Show Login dialog on startup... option?
https://winscp.net/eng/docs/ui_pref_window

See also WinSCP suddenly opens with two local panels with seemingly no option to open a connection to my server. What do I do?.