Reading from the top:
Unbooked - This is a book, you can use this for grouping; some examples include: Portfolio name, open/closed, strategy, investment book.
ARM - This is the underlying stock
No position group - Similar to a book this can be used for finer tuned grouping. Examples include: Strategy, Trade IDs, source etc.
The actual positions go like this: Quantity | Expiration date | Strike | Trade Type
A negative quantity is a trade you've sold.
A positive quantity is a trade you've bought.