Perhaps you should be out back also, since most of our congregation comes through the back door. If you cannot be here on a sabbath during a month in which you are an usher, then it is your duty to get someone to serve in your place. That is your responsibility. Part of the sermon of your life is your dedication of your material goods to God. Total stewardship means the devotion of everything we have to Christ.
Deacons are to encourage the people of the church to be at least at that starting point.
Deacons encourage by example, by giving at least the tithe of their income. A person who manifests those characteristics is a person who is full of the Holy Spirit. Every elder, every deacon, every Christian ought to strive for that kind of character. Christians are a people of compassion, and happiness, peace and patience, kindness and goodness, faithfulness and meekness, humility and gentleness. The answer is prayer and effort.