m.k. said:

……So in terms of the worship team working as a single body, what am I supposed to do?

Not specifically worship but whenever you are in a group and you don't have music you should analyze the situation. While you are playing you should be listening and determine which parts are important and which need doubling or not. You should allow the soloist to have the melody most of the time and play base notes from the chords. One of the 3 or 4 main arpeggio tones. You can play them long or rhythmically, depending on the style and rhythm section as well. Try to work with the rhythm section. When the soloist takes a break it can be your turn to turn it on, either by playing the melody or jamming in the right key. You can also attempt to play a harmony with the solo from time to time. Above all, listen and work with your colleagues and enjoy.