@Anubhav_Jain many thanks for your comment, and happy to welcome you to our community! 
We realize the importance of the Agency account, and I’m happy to say that we’re on the final stage of developing the major feature in this project, an option to add members to your account. You can follow the updates here: Add team members to your account.
We also have another request for adding folders, feel free to vote for it here: Folders for good organization.
Thanks a lot for your help!