Please press the hyperlink "Collaboration Manager" in the left navigation and then press the hyperlink "Global Settings".
If you use the CollaborationManager on a server farm, every server needs the "CM_Temp" folder with the same path. You have to create this folder on every server per hand.
Fill in the Temporary directory a path to your local file system. For example "C:\CM_Temp\".
Set the "Continue Workspace Creation after FatalError to "Disabled".
Press the OK-Button.
Secure Store Service Key: For this settings please read Secure Store Service
Activate this Button if the Server is running in SharePoint Foundation mode. This is requiered if you use the "Workspace Information Webpart" and taxanomy fields.