What I would suggest if users are not using the description fields is to add a custom field to the ticket types that is required for the user to fill in. It is basically a reminder for your users to enter a description. You can find instructions on how to create ticket custom fields here: https://www.lansweeper.com/kb/185/creating-and-adding-custom-fields-to-ticket-types.html
Lastly, in newer Lansweeper releases, the description should already be required when creating a ticket in the web console.