For sure it can be done, just can't remember how. My daughter has her Leaf programmed that way and I personally hate having to always unlock the door when someone gets in or wants to get out but the option is there if you want it. I'm sure someone else will come along and know the exact sequence to change it.
2012 SL purchased used 2/'16
2013 S w/QC purchased new
Juicebox Premium 60a L1/L2 EVSE, Ebusbar 16a L1/L2 EVSE
'12 EVSEupgrade'd 20a L1/L2 EVSE, '13 EVSEupgrade'd adjustable 6-20a L2, 6-13a L1 EVSE
Zencar 13, 20, 30a L1/L2 portable EVSE
GE Durastation 30a