Score Editor: exclusive key commands for when the Score Editor window has the focus

For example, I use the the “1” key to select the Object Selection Tool: Normal Sizing tool. The problem is that, in the Score Editor, this key shortcut is not available… So I was wondering if it’s possible to have in the Key Comamnds window a button called Assign To Score Editor only. This would apply especially to key commands that are already in use, and which have no effect in the Score Editor (i.e. no effect until you assign a Score Editor command to them).