LS announced quite awhile ago that they were stopping development of the Helpdesk feature. I wouldn't hold your breath for any improvements to Helpdesk.
I'd like to chime in and request being able to use the email account for calendar. We use our Gsuite calendar for our department. It would be nice to be able to have the Lansweeeper calendar show up.
You can do a new tab, select the width desired and use the iFrame widget. If you are using OWA you can use the url to that calendar, sharepoint calendars work too.