Allow apps to navigate via /home?

Text Explanation: I have aMember (member script) and WordPress installed on my server and am wondering how to allow my apps to “talk” to one another via the file system. (The aMember WordPress plugin needs to talk to the actual aMember installation, which is located in another “app”.)

Graphical Explanation: https://imgur.com/a/nTUrwl8

Thank you,
Shane.