Number of k-points used in a SIESTA calculation

How do I determine the number of k-points that I should use in a SIESTA calculation?

Should I enable WriteKpoints option to know how many points are being used?

SIESTA prints out explicitly how many k-points it uses.

The Monkhorst-Pack block sets the total number of k-points (note that applying time-reversal symmetry may, roughly, halve the number of used k-points).