This article describes the File Saving options window, where you specify how you want to save files that you receive in conversations and recordings that you make of meetings.
Save your transferred files
You can save files that others send to you in Lync to review, work on, or share later.
Open File Saving options, and then, under File transfer, click Browse to select the folder that you want to keep received files in.
Save your recorded meetings
This feature is not available in Lync Basic.