I am not quite sure if you are referring to domestic missions or foreign missions but I am in the Alliance because of foreign missions. Having been in the Alliance for a very long time, I have seen many approaches to the GCF and foreign missions. There appears to be less interest in foreign misions than in the past with more empasis on the local church. I have enjoyed the week long missions conferences that Alliance churches have done in the past but since then I have seen a couple approaches that seem to be effective. One was to arrange to have a missionary interviewed briefly, like just a friendly phone call from and to them during the morning service. Considering the technology and time of day for each end, it can be arranged. Just emphasize that the missionary is on the field and is speaking from there. Recently, at a local church a missionary was introduced in the morning service with an announcement that he would be there for a special luncheon in the social hall. It was well attended and the food was good.
Alliace Life is very focused on foreign missions, is well written and inexpensive.