Juniper SRX 220H Configuration required for Dynamic VPN & firewall port forwarding)

URGENT! Replacing ISP VPN solution with broadband service and a new Juniper SRX220H in our head office. Need a working configuration and ability to add extra users. We are licenced for JunOS dynamic VPN.

All other branch offices on MPLS network but when on VPN still need to be able to route traffic to those sites. Would also like to have all internet bound traffic route through this outbound connection. (this might need to be done by ISP who manages MPLS.)

I can provide CLI access and remote access via my computer.