You will go before a judge. The judge may ask you to enter a plea. Your lawyer may make an argument for bail or they may wait until later when they have more information. If you are released on bail, the judge may impose conditions on bail such as drug testing, mental health treatment, travel restrictions or electronic monitoring.
The judge may require co-signers. Unlike state court, co-signers are not usually required to have cash on hand but if you do not show up for appearances or comply with the conditions of the bond, the government can collect the full amount of the bond from you and each of your co-signers. You should discuss any potential co-signers with your attorney.