How do I make sure that images are always saved in the same folder without having to display the window to specify a folder?

To make sure that images are always saved in the same folder without having to display the window to specify a folder when scanning documents, you will need to change the specific profile settings in ScanSnap Home.

To change the profile settings:

1. Open the [Edit profiles] window.
   
   
   
2. Select the profile you want to change.
3. Change the settings to the following:
   ・Managing options
   　- Type: PC (Scan to file)
   　- Save to: a folder of your choosing
   ・Application
   　None (Scan to file)

For details:
ScanSnap Help
(Select the model name of the ScanSnap at the top of the page)