Once your account has been approved on the site and you can log in, you'll need to set up your character to be able to sign up with it for raids.
Here is how to do it.
1) Log into the site
2) In the upper right click on your login name and choose View your profile
This will take you to a new page
On the right there will be a box labeled Stats.
3) Click on Games in the Stat box
4) In the Everquest 2 box, click ADD CHARACTER
This brings up a new page
Fill it out with the information of the character you want to raid with bga.
(Server, Name, level, gender, race, class)
Once all the information is filled out, click on the Add button at the bottom
5)Once the character is added, you will be at a new page listing your character(s)
Find the character you just added and click SITE MEMBERSHIP under the character name
6) This will take you to the Character Guild Site Membership page
Under Guild Name Grenricks Guidance should be listed. On the far right of that table, there is a column called Modify.
Click Add.
Now you can sign up with this character for raids listed on the site.