There's no other shortcut.
But you can use menu (Alt+M, C for Select or Alt+M, U for Unselect).

Hi,

it may be a totally stupid question, but I used to use keyboard shortcut for selecting/deselecting group very often and now I got new laptop, where I installed version 5.1.7.3446, where the shortcut is Num+. But on my laptop Dell XPS there is no num key. Also on this new laptop, there is the key Fn, but it does not work together with UIOPJKLM-[;. as the numeric keyboard and +-*/ (I use Czech keyboard, so I was very used to this and now it is problem for me to write +/*...). Is there some way to either change the shortcut in WinSCP or to simulate num key (I have Win 8.1) because it really drives me crazy... (I have very similar problem in Total Commander, where it is also num+). Every help will be very appreciated.