「即実行」がOFFの場合は、開始したボタンを離したときに実行されます。
「即実行」をONにすると、一致した時点でボタンを押したままでもすぐに実行され、再びジェスチャを開始した状態になります。
A mouse gesture (mouse operation) can be specified from [Tool]-[Gesture...].
In the gesture setting dialog, you can assign it by mouse operation of "Right drag here" part.
Basically, move the mouse up / down / left / right while pressing the right button to assign the operation.
You can also start recording while pressing the wheel button (middle button) or the mouse extension button.
You can not start recording with the left button.
When recording starts, the left button and the "wheel up and down" are also targets for recording.
If "Sudden" is OFF, it will be executed when you release the button.
If you set "Sudden" to ON, it will be executed immediately even if you keep pressing the button, and it will be in the state where you start the gesture again.