Symbolic link (Junction/s), how-to mklink? Please help with Junction?

Hi all, having been a member at Seven then Ten forums for a fair while I'm hoping to find a straight answer here..? Apologies in advance if this is too verbose.
Windows 10 system booting from (UEFI) NVME with 2xSSDs + 2 MHDDs for storage...

An application (Xperia Companion) which will not let me select or personalise the location for saving backups of my cellular phone data...

Think I found a fair definition of the differences at the Computer hope site which would suggest it's a Junction I need:

What's the difference between a junction and a symlink (symbolic link)?

Although very similar, a junction is not the same as a symbolic link on a Windows computer. Below is a list of some of the major differences between a junction and a symbolic link.

1. A junction point can only be a link to a local volume path. Symbolic links can be a local and remote path. For example, a symbolic link can link to the network share \\hope\files.
2. A junction point is designed for local directories, but a symbolic link can be used for directories, files, and shares.
3. A symbolic link resolves to the local machine. If you create a symbolic link to c:\hope on your computer and someone accessed that link from a remote machine, it would try to open c:\hope on their machine, not yours.

I want Xperia companion to save backups to F:\Sony Backups NOT the default C:\Users\GD\Documents\Sony. Would the Junction (link) allow me to to fulfill my wants and could someone please demonstrate the mklink commands needed?

with thanks and regards,
Dave

Tutorial:

Symlinks in Windows 10 - Windows 10 Forums

Don't forget to read the comments and links!