If you're still unsure, simply go into the Finder on your CATALINA HOST and select GO > Home. NOTE: You can either user your long user name, or your short user name, which is the name of your Home folder. Change the name from 'virtualmac' to your host computer's login name and password. You may be requested to log into your HOST computer.

Enter the address is you saved from step #6:.

On the GUEST, in the Finder use the GO > Connect to Server menu command.

If it is not running, launch VirtualBox and the virtual machine running Mojave (GUEST).

Make sure to include the 'afp://' or 'smg://' part of the volume name with the rest of it. Copy it down somewhere because you'll be referring to it shortly in step #9 and copy/paste won't work. 'Other users can access shared folders on this computer, and administrators all volumes, at 'smb://192.168.23.60' or 'afp://macbook-pro-7':

IMPORTANT: below where it says 'File Sharing ON', you'll see something like:.

When you click the '+', you'll need to locate the 'My Transfer Folder', select it, and press the Add button. Click the '+' to add 'My Transfer Folder'.

On the right will be a two-column browser.

Select File Sharing checkbox and then select that entire row:.

GO into the HOST's SHARING preferences:.

Use the Apple > Preferences menu command to open the Host computer's preferences:.

Create a folder on the Host, preferably in an accessible directory like 'Documents'.

Here are the one-time steps to create the shared folder:

Once you follow these steps and set this up, you won't have to do this again. The purpose of a creating a shared folder is to transfer documents between your Mac running Catalina (HOST) and the VirtualBox virtual machine (GUEST) running Mojave versions of Screenwriter 6.5 and/or Dramatica Story Expert 5.3.

Virtual machine shared folder