Long presses are not available in version 1.6
Version 1.7 will but has not been added yet.
Best you can do is setup a button to use as a shift key, check tutorials.
One way I have done it is to unbind the left shoulder button to keep it from preforming the default output. Then you can use it with any other button for dual use. Like preforming the default L1 output when holding it and pressing R1.
Most times when using a button for dual outputs you will need to unbind it and then use macros for the default and secondary outputs.
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