I need help with file sharing

Host:
iMac 2017 16GB RAM 2.3GHZ INTEL Core i5 1TB Hard drive MacOS 10.14 Mojave
Guest:
2048MB RAM 1 CPU 256 GB vdi OS X 10.6 Snow Leopard.
The guest boots and appears to work normally. My problem is I want a way to share files between the host and the guest. I read somewhere that Guest Additions is not available for OS X, and yet I can insert and mount the Guest Additions CD image. When I double click on the pkg icon I get a warning that it will only work with 10.7 or later. Can someone please help me figure this out?
iMac 2017 16GB RAM 2.3GHZ INTEL Core i5 1TB Hard drive MacOS 10.14 Mojave
Guest:
2048MB RAM 1 CPU 256 GB vdi OS X 10.6 Snow Leopard.
The guest boots and appears to work normally. My problem is I want a way to share files between the host and the guest. I read somewhere that Guest Additions is not available for OS X, and yet I can insert and mount the Guest Additions CD image. When I double click on the pkg icon I get a warning that it will only work with 10.7 or later. Can someone please help me figure this out?
