VS Code Shortcut for navigating inside Command Palette and File Picker

Question

In vs code, command palette and file picker can be opened with ctrl+shift+p and ctrl+p respectively, I want to set custom shortcut for moving down and up inside the list.
like alt+j(up/previous) and alt+k(down/next)

Answer 1

To navigate up and down in the command palette or any quickOpen panel:

{
    "key": "alt+j",
    "command": "workbench.action.quickOpenSelectNext",
    "when": "inQuickOpen"
},
{
    "key": "alt+k",
    "command": "workbench.action.quickOpenSelectPrevious",
    "when": "inQuickOpen"
},

To navigate and trigger whichever command you end on:

{
    "key": "alt+j",
    "command": "workbench.action.quickOpenNavigateNext",
    "when": "inQuickOpen"
},
{
    "key": "alt+k",
    "command": "workbench.action.quickOpenNavigatePrevious",
    "when": "inQuickOpen"
},

Demo of the second set of keybindings - triggering the navigated-to command automatically - i.e., when you release the alt: