Guild Wars 2

So our guild has unlocked guild bounty but I’m not 100% sure about the commendations.
What is the max per week you can earn?
How do you earn them?
Do you have to participate to earn them? (But still be playing at the same time and repping the same guild)
Do you have to be logged in to receive the rewards?

Any help would be greatly appreciated because I have heard numerous rumours and the wiki is not really any help
Thanks.

http://dulfy.net/2013/02/26/gw2-guild-missions-guide/

Guild Commendations are the personal rewards a member of your guild gets for ‘subduing’ a target during a bounty. Along with the 2 Guild Commendations, you earn 50 silver and 2 items of at least RARE value.

Note that the bounty itself doesn’t have to be a success for individual rewards to be earned. So if you do a T1 bounty and only get 1 of the targets, you will still earn the personal rewards for being in on subduing the target.

Each account can earn a maximum of 2 Guild Commendations per week, regardless of how many bounties they participate it. It doesn’t matter how many guilds either – it’s 2 per week max per account.

You must be repping the guild that runs the bounty and be in on subduing a target to earn the personal rewards.

Thankyou that makes a lot for sense
I was just wondering because my guild is about to attempt guild bounty but I’m not gonna be there