Eucharistic Ministers assist in distributing communion at Mass, communion services, and visits to the homebound. Training is provided and schedules are planned in advance.
There are some qualifications involved in being a Eucharistic Minister and the recommendation of the Pastor is necessary.
We use the Ministry Scheduler Pro site (MSP) to schedule Lectors and Eucharistic Ministers. There is a video on their help page that explains how to use the app. MSP also has a mobile app for your phone or tablet that has most of the same functionality - you can search for it in your app store.