Yes, but I want to be able to change them. Its not just Nova launcher, most modern launchers support this, but it comes from the app.Are you asking for something like this, which is using Nova Launcher?
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I believe those can be modified using a combination of Nova Launcher and Sesame Shortcuts, but I don't personally use servers. It requires an app that can handle "intents" (which makes me sound like I know more than I do), which also includes Tasker, but I doubt it can be done solely wilh MiX, if that is what you are asking.