When you install CuteFTP Server, you are given the option to install the Server Engine (cftpte.exe), the Administrator Interface (cftpsai.exe), or both.
The Administrator Interface is used to connect to and administer the Server Engine on either a local or remote computer. You are allowed to install the Administrator Interface on as many computers as you like, however the server engine can only be installed on the number of computers equal to the number of licenses you purchased.
Below is a sample setup in which the FTP Server Engine is installed on the user's main system (Home PC), with the Administrator Interface installed on his/her laptop, work PC and home PC. The user can connect from the remote system and modify the server's settings, add or remove users, shutdown the server, etc.
Starting the Administrator Interface