[klop]

lol I think Ive answered that question 10 times!
but heres the answer:

Some info on the dmflags cvar.

// dmflags -- flags that can be set in the dmflags variable.
// DF_NO_HEALTH 1
// DF_NO_POWERUPS 2
// DF_WEAPONS_STAY 4
// DF_NO_FALLING 8
// DF_INSTANT_ITEMS 16
// DF_SAME_LEVEL 32
// DF_NO_ARMOR 2048
// DF_INFINITE_AMMO 16384
// DF_NO_FOOTSTEPS 131072
// DF_ALLOW_LEAN 262144
// DF_OLD_SNIPERRIFLE 524288
// DF_GERMAN_SHOTGUN 1048576

dmflags (sum of all flags)

Example: You want to set DF_ALLOW_LEAN 262144 and DF_GERMAN_SHOTGUN 1048576

You would add 262144 + 1048576 = 1310720

simply add the following line to your server.cfg file :
set dmflags 1310720

or you can type this in the console :
dmflags 1310720