To access the Global Preferences option, either click on the tool icon placed on the top right hand corner of the interface or go to Manage > Global Preferences:
A new section will be opened showing the following options:
Configuration
Among the available settings listed under Configuration we can find priorities to indicate eCPM optimization, default options for campaigns creation, and conditions for the account users, among others.
Logos
You can upload logos to the interface and to any e-mail sent by the system.
The maximum dimension allowed for the image size is 200x50.
...