Their indifference is only the true power not to act, as Alvarez states (De auxiliis IV.14)
By the indifference to acting or not acting in which, on their view, freedom must be placed, or which at least necessarily goes with freedom, they mean nothing other than what was described above.
It is not an indifference that would picture a free cause as unsure and torn over whether to act, nor one by which, given everything required for acting, the free agent might just as well not act as act. It is simply a real power not to act and to act otherwise. That power remains in a free cause when, with everything required for acting in place, it is not only on the point of acting but will act infallibly and surely.
Alvarez sets out his view on this very clearly and explicitly in the summary of his work on the helps of divine grace, book 4, chapter 14, the source of the words of his that we quoted in the preceding disputation.
Latin
XXX. Adeoque per indifferentiam ad agendum, vel non agendum, in qua ex eorum mente libertas constituenda est, aut quae saltem libertati est necessario juncta, non aliam intelligunt, quam quae supra jam descripta fuit. Nimirum neque talem per quam causa libera concipiatur dubia & anceps an agat, vel non agat; neque etiam per quam positis omnibus quae sunt ad agendum requisita, contingere possit ut agens liberum tam non agat, quam agat; sed quae non aliud sit quam vera non agendi, & aliter agendi potestas, quae manet in causa libera quum positis omnibus quae ad agendum requiruntur, non solum est in proximo ut agat, sed etiam infallibiliter & certo actura est, prout Alvarez suam hac de re sententiam clare admodum & diserte exponit in summa operis de auxiliis divinae gratiae lib. 4. cap. 14. unde desumpta sunt verba quae ex eodem Alvarez superiori disputatione a nobis relata sunt.