How can I set a hotkey for a custom menu in Google Docs?

I am in the process of integrating a custom menu into my spreadsheet and I’m interested in assigning a hotkey for its access. Currently, pressing Alt-F invokes the File menu. I would like to set Alt-B for my custom menu. Is there a method to achieve this? Additionally, can I assign hotkeys to specific items within the menu? Below is the script I am using to create the custom menu:

function initializeMenu() {
    var activeSheet = SpreadsheetApp.getActiveSpreadsheet();
    var customMenuOptions = [{name: 'Payments & Registration Check', functionName: 'openPaymentsRegistration'},
                              {name: 'Allocate Billets', functionName: 'allocateBillets'},
                              null, // This adds a separator line
                              {name: 'Show Remaining Allowed Emails', functionName: 'displayRemainingEmails'},
                             ];
    activeSheet.addMenu('Custom Menu', customMenuOptions);
};

You can’t assign hotkeys directly to custom menus in Google Docs using Google Apps Script. However, you might be able to use browser extensions like “AutoHotkey” for Windows or “Karabiner” for macOS to remap keyboard shortcuts for faster access. Just need a littel extra setup outside the script.