The prices of the instruments can be updated by navigating to the instrument in the admin interface or by importing a file through the admin interface.
To update the prices manually simply navigate to the instrument and select edit.
Next we can set the new price and the date for the price.
The other possibility is to import a file with data for multiple instruments and multiple dates. For example the file can be created in Excel and exported to CSV and then imported to BFS by navigating to the house view and selecting import/export.
The import view looks like the image below.
Below you can download an example file.