Hello Sensei,
Good questions. For the staff bios, there are only a few lines that are available on the listing page for it. The individual staff pages can have pretty much as large a bio as you’d like, but there is less room on the listing page (the archive).
So if you have a longer bio, what you’ll want to do is edit your staff member. Look down below the main content box and you’ll see an excerpt box. Enter the description that you’d like to have on the listing page there. You can even copy out the top portion of your bio if you’d like to. That way you can have a shorter amount of text on the listing page and keep it from overlapping your email and Facebook links.
You can add a unique background image for each staff group. Go to the Staff section in your dashboard and choose Staff Groups. You groups will be listed in the top right. Click on the group you’d like to edit and you can add an image using the uploader there. Save your changes and that will become the background image of the listing page. The individual staff pages will always use the staff’s featured image as the background.
If you have any questions, let me know.
Thanks,
Bill