As a Senator you represent the interests of the people as a whole in SimDemocracy.
When a citizen posts a bill in the #bill-proposal channel, you can decide to sponsor that bill.
If you wish to sponsor a bill, you inform the Speaker of the Senate, who will schedule the bill for an 24 hour amendment phase. This is when Senators can suggest changes to the bill.
Following this, the Speaker then posts the ammeneded in the #senate-floor channel bill for vote
Once posted, the bill remains open to be voted on by Senators for 24 hours. A bill passes if there are more "aye" votes than "nay" votes.
You can also choose to "abstain", which means your vote will not be counted (but you also won't be recorded as having missed the vote).
Senators can also sponsor a Constitutional amendment. Unlike a regular bill, Senators do not vote on a Constitutional amendment. Instead, the the public votes and the amendment passed on a two-thirds majority.
A Senator may also call for the impeachment of a government official if they feel there is evidence of unlawful wrong-doing. However, this should not be done lightly and you should discuss this decision before making it.
Senators also vote on appointments the President makes. So it will be up to you to decide whether the President has chosen the right person for the right job. A two-thirds majority is required for the appointment to pass, so a "nay" carries a great deal of weight.
For further details on a Senator's duties, you should read the Constitution of SimDemocracy