Knowing that probably the last thing most of the b/s want to do is actually go from house to house,taking the field service arrangement would be a great opportunity to use scriptures like...
Mark 6:30,31. Jesus encouraged rest. Probably this is a good opportunity to apply that encouragement.
You could assign one group to go to a peaceful place like the library and take a nap to meditate on Jesus words.
Another group could be assigned to park witnessing.
Ecclesiastes 11:1 could be applied. Sitting by a lake and throwing the tracts and magazines in it would be very therapeutic.We never know what the result of that could be.
If there are enough to make another group they could be assigned to go to the local cemetery. Ps 115:17. There they can find a lot of people resting and not praising Jehovah, so it would be a good place to practice presenting the magazines. The reaction from the those RIP would probably be about the same as the one that would be found in the the house to house work, so it would be beneficial to hone witnessing skills.
Probably those scriptures would be good.