Connection between two different VPNs

Hello,

we have in our company two different VPN setups inside the Mikrotik. The first is a VPN L2TP Ipsec server configuration for all external workstation which connect as VPN client. The second is a VPN L2TP IPsec client configuration to connect to an external CRM server.
Now we want to have a connection between the external workstations to the external CRM server through our Mikrotik.

What is working so far:
The internal office network could connect through the VPN to the external CRM server
The external work station could connect though the VPN to the internal office network

Connection from the external workstation to the external CRM server doesn’t work. No ping is working.
I also attached a drawing of our situation.
vpn.PNG