So it varies wildly from jurisdiction to jurisdiction, further modified by the nature of the offenses, your past criminal record, what kind of wealth you have, and the whims of the judge.
If the offense carries mandatory jail time, odds are good you're going directly to jail as soon as your verdict/plea is formalized, and any time served between the verdict/plea and the sentencing hearing is considered part of your sentence. Exceptions can be made if the expected sentence is likely to be short, or if you're wealthy/powerful enough to negotiate a voluntary surrender after you have had time to set affairs in order (or can make a compelling argument for why the judge should grant this), but for normal people, this is rare for long sentences. For short sentences, I've seen "only in jail on weekends" and "sentence delayed until you can arrange the consecutive days off, at which point you self surrender," but those are for exceedingly minor offenses like traffic violations, not something as major as this.
If sentencing guidelines include probation and/or fines as possible sentences, so jail time isn't guaranteed, you may be allowed to remain free if you're deemed to not be a risk to the public.