Evont theme has options to choose logo and layout for the footer. to select a layout for the footer. Go to Appearance > Theme Options in the left hand choose Footer Options
The Footer options allow to select the required logo. Click on the image of the required style to choose it.
Also we can choose the logo. Theme allows to choose both normal logo and retina logo. Click on the browse to upload the Save all changes to get the required update. Also we can enter the copyright info and save it.