In order to manually add feature keys in the desktop version of eFileCabinet, perform the following:
1. Select the "Administration" tab, then select "Server Settings"
2. Select the "Feature Keys" tab, then select "Add Keys".
3. Enter the keys (typically provided via email) and paste them into the "Add Feature Keys" window, then select OK.
NOTE: only paste the characters that show up before the space. The characters immediately after (examples being "C5" or "HIP") are there to indicate the type of feature key being added.
Confirm that all the keys show a green checkmark next to them, then select OK to complete the application.