How to configure atop sampling interval & log path?

1. Edit the file /etc/default/atop
2. SET INTERVAl=60
3. SET LOGPATH="/ur-desired-path", in this case LOGPATH="/var/log/atop"
4. Restart the atop service systemctl restart atop.service

P.S. In Centos 7 I have atop's config file in /etc/sysconfig/atop.