Mapping Ctrl+Alt+something keys in SecureCRT Windows
I'm using SecureCRT 8.7.1 (x64 build 2171) - Official Release - March 17, 2020 on Windows 10. I'm trying to map Ctrl+Alt+Left Arrow and Ctrl+Alt+Right Arrow to move between open tabs. Clicking on "Map key" in Terminal Emulation -> Mapped Keys -> Map a key, or, even, specifying the key combo visually by clicking the keys on the keyboard in Tools -> Keymap editor doesn't work with Ctrl+Alt keys. Is there any trick to do this?
Thanks in advance