I know you will disagree with me, but I would STRONGLY advise against this
practice anyway. All shares should be on a designated server. If there is
insufficient space on the server, add a disk, nowadays they're cheap enough.

Ad-hoc sharing leads to a number of headaches:

1. It is highly unlikely there is any backup of the data, so if the disk
fails, it's toast.

2. It makes any upgrades or reorganizations of the network a nightmare, as
it creates a situation in which any changes you make, however minor, for
example renaming a computer, will have unexpected consquences.