You can use the Link to File action to link a specific file for your reviewers. This action allows you to provide a file for Reviewers to view/download. Review the video below to see an example of the action being built in Editor.
To add a Link to File action to a widget in Editor:
(Note: this will be the same approach for all Window Control actions.)
Select the widget that will be the source for the interaction, e.g. the 'Download Invoice' checkbox.
Open the Actions panel.
Click the Add Action button.
Note: You can also right click the widget and select Add Action from the menu.
Select the desired trigger, for example 'Click', and the desired action, Link to File.
Click the Upload File button and select a file to upload to the action then click the Next button.
Note: You have the ability to either change the file with the Change File button, or remove the file completely with the Remove File button.
Optionally add a delay and click the Done button.