Is this the feature you're referring to? https://affinity.help/photo/en-US.lproj/index.html?page=pages/GetStarted/channels.html&title=Using https://affinity.he

Is this the feature you're referring to? https://affinity.help/photo/en-US.lproj/index.html?page=pages/GetStarted/channels.html&title=Using https://affinity.help/photo/en-US.lproj/index.html?page=page... channels https://affinity.help/photo2/en-US.lproj/index.html?page=pages/Channels/channelsSelectingEditing.html&title=Editing https://affinity.help/photo2/en-US.lproj/index.html?page=pag... channels Although not as feature rich as Photoshop, they are quickly catching up.