Where's the SELECT button?
In Mega Man Legacy 2, some games like Mega Man 7 require the use of the SELECT button in order to access parts like the in-game store.
Since the PS4 does not include a SELECT button and there's a no SELECT in the configuration options, what button can be used for SELECT?
For majority (if not all) PS1/PS2 titles, the Touchpad has been mapped for use as the Select/Start buttons.
For Mega Man Legacy 2 Collection in particular, the manual suggests the entire touch pad is the Start button.