How to set "smearing" in Gaussian?

Hallo,

although Gaussian itself is not really an Accelrys' product, maybe someone helps me.

How can I set a so called "smearing" in Gaussian input? (The same as "use smearing" in DMol3, or "finite temperature of electronic structure" or "fractional occupation of MOs"..., I hope it's clear what I want.)

- Which keyword?  I can't find it enywhere, even at the G. website...

Thank you.

Tomas Koubsky