For now (version 1.3.0) there is only 1 command added to Obsidian.
De-activate this in Plugin Settings > Plugin if you already have too much commands :)
1. Command: “Add all Gantt properties to current file”
As the name implies, this command adds all known event frontmatter properties to the current note.
Only works with normal Markdown files.
If you renamed the frontmatter properties, they will get added exactly as you wished.