Very rarely is anything new written in their literature. And so it is with this. See OKM 10/74,
"When some question arises, ask yourself: Has this time been spent in the preaching activity? Or has it been spent doing something else that is not actually part of that work? Report all the time you conscientiously feel was used in the preaching work. The amount you report in comparison with others is not important. (Gal. 6:4) The important thing is that the love in your heart has moved you to share your faith with others. (Luke 6:45) What we report should give us joy and not pangs of conscience."