Canon Wireless File Transmitter WFT-E7A Instruction Manual page 50

Configuring EOS Utility Communication Settings
There is no need to complete pairing again if you continue using a particular camera,
transmitter, and computer together after pairing without changing the settings.
When using this function the next time, simply turn on the camera to which the transmitter is
attached and start the pairing software. The connection between the camera and computer
will be established automatically.
You can add the pairing software to the software launched at startup of your computer. In
the [Preferences]
Software to the Startup folder].
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[Basic Settings] tab in EOS Utility, select [ Add WFT Pairing