On mobile, each list item in an Index powered view can be swiped to the left to present an action list. The default modifiers shown in the quick action list are “Edit” and “Trash”
Adding a custom modifier to the quick action list
Any custom modifier can be added to the swipe action list by adding the following to the list of arguments for the modifier:
All custom modifiers added to the swipe action list are shown in a popover under the “More” modifier. This is to prevent issues with large amounts of modifiers taking over the list.