Open the channel panel of the image and click on the added channel. After selecting this channel, click on the channel panel, click to select the channel option in the panel menu, and set the color opacity under the channel option to 0. The default is 50.
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Open the channel panel of the image and click on the added channel. After selecting this channel, click on the channel panel, click to select the channel option in the panel menu, and set the color opacity under the channel option to 0. The default is 50.