My b2evolution Version: Not Entered

I think there is a fair chance that this question has been asked before on here but I couldn't find anything when I searched for it.

I created a new standard blog a couple of days ago and was told the following;-

Standard »
A standard blog with the most common features.
Photoblog »
A blog optimized to publishing photos.
Group blog »
A blog optimized for team/collaborative editing. Posts can be assigned to different reviewers before being published. Look for the workflow properties at the bottom of the post editing form.

Your selection here will pre-configure your blog in order to optimize it for a particular use. Nothing is final though. You can change all the settings at any time and any kind of blog can be transformed into any other at any time.

I would now like to convert it into a Photoblog, but cannot find any instructions as to how I do that - can anybody help?