There is no "button" function implemented yet as we do not have Action/Macro's. They may be in later versions. I am sorry for any inconvenience this may cause you.
You may be able to create an extension which can be add to the functionality of Qlik Sense.
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You can develop an extension to do that. There is already an extension that does something close to what you are looking for. Take a look at the "Toolbar Extension" here:
You can always create a new extension based on the code of the Toolbar Extension object.