tow different displays at the same time one on front screen one on back screen

If you mean how do you do this, that's relatively simple. Follow the instructions in the following artticle to enable and setup extended displays. The second article explains how to configure the Foldback screen for the back one.

https://support.easyworship.com/support/solutions/articles/24000020382-dual-monitor-setup

https://support.easyworship.com/support/solutions/articles/24000020394-display-foldback-stage-display-