@brianjmc1
Tried the forum search?
There are several threads regarding this topic.
In the OpenVPN access server settings you have to add 192.168.200.0/24 to the "local networks" to push the route to the clients.
And in IPSec you have to add a phase 2 for the OpenVPN tunnel pool and the branch LAN.
So in the main office:
local network: OpenVPN tunnel network
remote: 192.168.200.0/24
And in the branch:
local network: 192.168.200.0/24
remote: OpenVPN tunnel network
Ensure that the access is allowed on all incoming interfaces.