Use of 'weight' in Ticket types

I could not find anything in the documentation  on the  'weight' option in documentation on Ticket types ( eventbookingdoc.joomservices.com/plugins/ticket-types )
I just want to check I understand how it works.
I have an event which say has 6 places. I want peple to be able to book between 1 and 6 places (so the final option allows someone to book out all the tickets on the event (if the no of registrants is 0 when they book).
Reading through the forum posts I found one topic that said  setting Weight to '0' would have no effect on capacity and that '1'' (default) would reduce capacity by 1, so does that mean if set weight to '2' it reduces capacity by 2 and seting to 3 by 3 etc.
2 Questions
1)So would my setting in the screenshot below work. setting capacity to 1 on ech ticket type and setting weight to between 1 & 6 on the ticket types.?
2) if 2 places are already taken on the event, does that mean a ticket with weight of 5 or 6 not be able to be booked as that would put capacity above 6?