Core settings are found in Dashboard -> Helpdesk -> Helpie Settings -> Core.
Under Core Settings tab, you can set the Main Title of the Helpdesk. The title is displayed in the main page of the Helpdesk.
You can also change the Knowledge base-subtitle which will be displayed right below the Main title.
To import data from other post types, you can use post-duplicator WordPress plugin.
Articles can also be edited from the front end . Front end editing option can be enabled from the checkbox Enabled Frontend editing and you can also control who can edit in the Front end.