Ensure your staff are gainfully occupied\productive at all times
Set performance Standards and ensure these standards are met
Monitor performance of staff
Ensure deadlines are met
Staff empowerment via workshops\training
Delegating staff responsibilities according to staff skills
Keeping management informed of departments accomplishments, setbacks,challenges
Maintaining of office equipment (calling techs etc.)
Ensuring staff have necessary tools or stationery to effectively complete given tasks
Monitor attendance (attendance record ,leave forms , time off etc)
"Mothering" your staff (care,nurture them as a person, health,happiness,personal problems, family wellness,know your staff)
Build good client relations
Organise regular team building functions
Process stats
Monitor computer systems for exceptions or fraud
And so much more but in a nutshell .Ensure the smooth running of your department ,Know each staff member and know EVERYTHING that goes on in your department