[Samba] Disk quota for groups AD

[Ricardo Pardim Claus]

Dear, 
I'm looking for a material that explains how to apply disk quotas by groups in Samba 4. However the materials I found left me confused. 

My environment: 
Centos 7, XFS filesystem, file server integrated with AD Samba 4. 

My objective: 
In my file server, create and configure quotas for AD groups in Samba 4. 

Could someone give me a help? Appoint a site for reading? 
Thank you!