How can I add Keyboard Shortcut to run a script in Google Docs?

For everyday work log, I've enhanced script from this link but it's a tedious task to do using the touchpad. If there's a way I can call the script using the keyboard shortcut. It'd be much faster and less tedious. The script is just an example.

    /**     * The onOpen function runs automatically when the Google Docs document is     * opened. Use it to add custom menus to Google Docs that allow the user to run     * custom scripts. For more information, please consult the following two     * resources.     *     * Extending Google Docs developer guide:     *     https://developers.google.com/apps-script/guides/docs     *     * Document service reference documentation:     *     https://developers.google.com/apps-script/reference/document/     */    function onOpen() {      // Add a menu with some items, some separators, and a sub-menu.      DocumentApp.getUi().createMenu('Utilities')          .addItem('Insert Date', 'insertAtCursor')          .addToUi();    }    /**     * Inserts the date at the current cursor location in boldface.     */    function insertAtCursor() {      var cursor = DocumentApp.getActiveDocument().getCursor();      if (cursor) {        // Attempt to insert text at the cursor position. If insertion returns null,        // then the cursor's containing element doesn't allow text insertions.        var date = (new Date).toLocaleDateString('default', { day: 'numeric', month: 'long', year: 'numeric'});         // use your local (browser) date format with month name        var element = cursor.insertText(date +"\n\nTasks Assigned : \n\nTasks Done : ");        if (element) {          element.setBold(true);        } else {          DocumentApp.getUi().alert('Cannot insert text at this cursor location.');        }      } else {        DocumentApp.getUi().alert('Cannot find a cursor in the document.');      }    }

Thank you for reading.