Canon EOS REBEL T7I Basic Instruction Manual page 191

Register [Nickname].
5
When the screen on the left appears,

press <0>.

The screen on the left will appear.
When using the displayed nickname,

press the <M> button.
Otherwise, enter any characters

between 1 to 8 characters in length.
When you finish entering, press the
<M> button.
Exit the setting.
6
When the screen on the left appears,

select [OK], then press <0>.
To return to the screen that appears

when the <k> button is pressed,
press the <M> button.
Setting Wi-Fi Settings
W-7