En Masse Entertainment website provides no requirements.
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Creating a clan in A.V.A. is in fact. A simple task. You first sign in at EME website. Under the Clan info, click on Learn More to open the clan page. To create a clan, click the "Create Clan" where you'll be prompted to answer a few simple questions. Upon finishing the questions you will be notified that the clan will be accepted and officially created in a period of 24 hours(a full day).