You must first upload the original images and their small copies using the file upload form on the actual page you want the gallery to be displayed. Filename's must be different only in one substring, called smallid. For example, you upload images 1.jpg, 2.jpg; their small copies tn_1.jpg, tn_2.jpg and your smallid is tn_".
Then you call action {{photoalbum}} with params:
smallid="<your smallid>"
perrow=<default 3> – number of small images on row.
nodesc=1 – to hide descriptions under images
title="Your photoalbum title"
toblank="1|new" – if set, large images appears in blank page. If new – in new browser window. (Version 1.02)