Route All Branch Office Traffic through HQ ISP IPSEC VPN

Hello,

I am trying to figure out routing to get all the traffic from my branch office to exit out of my HQ ISP connection.

Currently I have a site-to-site vpn tunneling traffic to my HQ through an ASA at the branch to my FTD at HQ.

I don't quite understand how to route all traffic through the S2S VPN. Here is my topology. Public IPs changed for privacy.

​

Branch ASA:

inside: 192.168.62.0/24

Outside: 208.110.221.170

Gateway: 208.110.221.169

​

HQ FTD:

Inside: 192.168.64.0/20

Outside: 69.200.85.82

Gateway: 69.200.85.1

​

Thank you for any help!