How to add new marketing attribute to the existing marketing attribute set?

Hi all,

              I searched for existing forums but I didn't find the required one. I found some using Tcodes ,which is not my requirement. My requirement is to add new marketing attribute to the already existing marketing attribute set. This  attribute set is created by my team lead with 4 attributes but now i have to add new attribute to this set so total will become 5 attributes for this attribute set. This has to be done through marketing professional business role. If this is not done through marketing attribute set, then I will go for the transaction where I can add marketing attribute for attribute set.

Please send the details of both marketing professional business role and transaction code.

Your help is highly appreciated.

Thanks,

Baasanthi.