How to Add a New Ad Size to an Existing Position
To begin, go to http://admgr.liebertpub.com. Make sure you're in the correct web property. Make sure you're in the correct web property. If you're not, change the web property.
Click the Options button on the bottom right of your screen:
Next, click on the Click here to configure the various ad zones link:
Click the pencil icon next to the position you you want to ad a new add size to.
Where it says Dimensions, click on the drop down menu and select the size you want to add:
Click the arrow to add the size:
Then click the active check box to activate it:
Click the save button to save your selection:
