Gallery pics - how do you edit them?

[claire]

Hi, am trying very patiently to upload some pics to the gallery.  I need to rotate a few of them but don''t seem to be able to do so.  I''ve clicked on ''edit'' but it says I''m not allowed to.  I then clicked on ''delete'' as my patience is running out, but it says I can''t do that either.... 

Can anyone advise please? 

Thanks, Claire.

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