It's totally up to you! Most submissions are either accompaniment loops or backing tracks.

• Backing tracks usually have parts considered 'core' instruments.  These will have bass, full drums, keys, guitars, etc. and are used to fill in for missing band members or even for a solo vocal instead of a band.
   
• Accompaniment loops tend to focus on the 'bonus instruments' and will add parts found in the original recordings that are not easily played or recreated by a typical worship band. These may have core parts, but are not designed to replace band members but rather accompany them.