How to limit the file of uploaded files + site pages 1.8 question

Hi,

I use the newest version of Elgg.

I am a new user of elgg. I have a problem, because I have a limited server and I want to limit the size of uploaded files - where to change it?

I have activated the plugin site pages 1.8 -> where are the pages? :)

 

Sorry for any mistakes,

Maciek