You need to have Project Matrix installed on the computer you installed e-manage|ONE on.
Once Project Matrix is installed you will need to map the following which is located under Tools > Configure User Settings > Personal Settings tab.
You MUST have a path entered as well a "Sif Import to Use" filled in. The path should be directed to the "Project Spec 4" folder as follows:
C:\Program Files (x86)\ProjectMatrix\ProjectSpec4
...
After mapping the file path you will need to copy the ItemSpecification.exe file from the e-manage ONE folder located in C:\Users\PCNAMEHERE\AppData\Roaming\e-manage One.
Note: Typing "%appdata%" as shown below directly into the file path in your File Explorer will take you directly to the users Roaming folder to select the "e-manage One" folder.
...
It will need to be pasted in the Project Spec folder located in C:\Program Files (x86)\ProjectMatrix\ProjectSpec4.
...