You need to run the configuration 923 (ARPEGE/IFS) for a gaussian grid, or the configuration E923 (ALADIN) for a LAM grid or a LAT X LON grid.
You should not forget to specify in the namelists of the configuration 923/E923 the definition(s) of your output (sub-)domain(s). Remember that in the case of LAT X LON grids there is no extension zone (set NDGL=NDGUX and NDLON=NDLUX in NAMDIM) and the geometry is not plane (set LRPLANE=.FALSE. in NAMCT0).
Finally do not forget that in the case of any gridpoint output for ordinary post-processing the surface geopotential should not be spectrally fitted (set LKEYF=.FALSE. in NAMCLA).