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Should I use a comma before the second “and”?
Yes, because the second 'and' is used as a conjunction for two clauses.
[Clause 1], and [Clause 2]
Try this page. :)
Either way, but I would remove it.
On one hand, commas are often best taken out. The sentence still works without the comma, so that rule of thumb would say to remove it.
On the other hand, the comma helps to group the first command (entering details) and separates it from the second (clicking).
On balance, I would remove it.