I'm just learning using bus'es in Sonar Professional...when I f.ex. create a bus for all drum tracks (hi-hat, snare etc) I notice that the "Output" for all those tracks still point to "Master" and send to Drums bus on the side. Is this how it supposed to be, or should I set Output to none, so that only the Drums bus sends to Master, or how do you do this normally?
Advice would be appreciated.

You can use buses in various ways. When used for "grouping" tracks that you want to process together or raise or lower in volume together, don't use sends on the tracks. Instead, use the track outputs to direct them directly to the bus. Otherwise you'll hear them twice - once from the track output (master) and also through the bus (which itself is going to the master out).

When you're using a bus for an effect like reverb or delay that you want to share for several tracks, use sends on the tracks. Also remember to set the dry/wet control on those effects to 100% wet so that the bus signal is only adding the effect, rather than a combination of dry and wet signal. Remember that with this construction you'll already be hearing the dry signal directly from the track (going to the master bus).

Sanderxpander
You can use buses in various ways. When used for "grouping" tracks that you want to process together or raise or lower in volume together, don't use sends on the tracks. Instead, use the track outputs to direct them directly to the bus. Otherwise you'll hear them twice - once from the track output (master) and also through the bus (which itself is going to the master out).

When you're using a bus for an effect like reverb or delay that you want to share for several tracks, use sends on the tracks. Also remember to set the dry/wet control on those effects to 100% wet so that the bus signal is only adding the effect, rather than a combination of dry and wet signal. Remember that with this construction you'll already be hearing the dry signal directly from the track (going to the master bus).

Thanks, just what I needed and very informative :-)