Installing serverr+Amahi behind a VPN router

[Septembre15]

Hi,
I wish to install Amahi on an old laptop as a home server.
Here is the thing: my home network has a linksys VPN router that I must use for work. I have a second router that I use as a wifi access point to my linksys VPN router. For work purposes, I must connect my work laptop directly to the linksys router, and my other computers (2 pc and a Mac) access the network through the wireless access point.

Here is how it looks:

Internet--->Linksys vpn--->wifi access point--->PSc and MAC laptops
router --->work laptop

My question is : where do I connect the laptop I want to use as my server and how should i configure my routers and Amahi so that everything will work?

Thanks a lot

David