  Due to the greater experimental precision expected from the currently ongoing
LHC Run 3, equally accurate theoretical predictions are essential. We update
the documentation of the Resummino package, a program dedicated to precision
cross section calculations for the production of a pair of sleptons,
electroweakinos, and leptons in the presence of extra gauge bosons, and for the
production of an associated electroweakino-squark or electroweakino-gluino
pair. We detail different additions that have been released since the initial
version of the program a decade ago, and then use the code to investigate the
impact of threshold resummation corrections at the
next-to-next-to-leading-logarithmic accuracy. As an illustration of the code we
consider the production of pairs of electroweakinos and sleptons at the LHC for
centre-of-mass energies ranging up to 13.6 TeV and in simplified model
scenarios. We find slightly increased total cross section values, accompanied
by a significant decrease of the associated theoretical uncertainties.
Furthermore, we explore the dependence of the results on the squark masses.
