Can I delete only one or two installations from the DataMate?

You can’t do exactly that, but here is a workaround that provides the same result.

1. Choose “DataMate -> Retrieval All.”
2. DMM retrieves data and displays a temporary database (“Data retrieved from DataMate”).
3. Delete any unwanted data from the temporary database.
4. Choose “DataMate ->Send Setup” to transfer the edited database to the DataMate.
5. You’ll see a warning. Click OK to continue.
6. Now the DataMate contains the edited database.