keyboard shortcut to key missing from keyboard (Ins)

I would like to create a simple keyboard shortcut for example when I press F13 I want the Insert keystroke sent. The problem is that I do not have a keyboard with the Insert key to press. How do I tell BTT to emit a key missing from my keyboard (e.g. not on a Mac keyboard, but on a Windows USB keyboard such as Insert or Windows Menu keys).

If you copy any existing keyboard shortcut trigger created in BTT, you get JSON which has the keyboard shortcut with modifier. I think if you can just find out the code used for insert, you can edit the JSON and paste it back to get the new shortcut. If someone with an insert key on their keyboard can try theirs, they can share the JSON with you too. Unfortunately, mine does not.

"BTTTriggerClass" : "BTTTriggerTypeKeyboardShortcut",
"BTTPredefinedActionType" : -1,
"BTTPredefinedActionName" : "Keine Aktion",
"BTTAutoAdaptActionToKeyboardLayout" : true,
"BTTShortcutToSend" : "114",
"BTTAdditionalConfiguration" : "8388608",
"BTTEnabled2" : 1,
"BTTKeyboardShortcutKeyboardType" : 1639,
"BTTRepeatDelay" : 0,
"BTTUUID" : "71760985-5D97-4DA4-8ED7-1C3F649BB791",
"BTTTriggerOnDown" : 1,
"BTTNotesInsteadOfDescription" : 0,
"BTTLayoutIndependentChar" : "\u0003",
"BTTEnabled" : 1,
"BTTModifierMode" : 0,
"BTTShortcutKeyCode" : 76,
"BTTShortcutModifierKeys" : 8388608,
"BTTOrder" : 0,
"BTTDisplayOrder" : 0,
"BTTAutoAdaptToKeyboardLayout" : 0