Q: How do I transfer UV layout to another object if I havent laid out the UV on the original first?

A: Select the original object, layout the UV's as you need to. Select object with laid out UV's, then select other objects that require the same UV layout. Go to Mesh>Transfer Attributes and select the option box icon. Make sure UV sets is set to 'current' and the sample space set to component, then select transfer. Your secondary objects should now have the UV's layed out as per you original object.