There are three ways of obtaining the indulgence:
To obtain the plenary indulgence, the faithful must also fulfill the ordinary conditions: go to Confession and Communion, be interiorly detached from sin, and pray for the intentions of the Holy Father.
1 – Pilgrimage to the Shrine Make a pilgrimage to the Fatima shrine in Portugal and participate in a celebration or prayer dedicated to the Virgin. In addition, the faithful must pray the Our Father, recite the Creed and invoke the Mother of God.
2 – Prayer before any statue of Our Lady of Fatima Visit with devotion a statue of Our Lady of Fatima solemnly exposed for public veneration in any church, oratory or proper place during the days of the anniversary of the apparitions, the 13th of each month from May to October (2017): there devoutly participate in some celebration or prayer in honor of Our Lady.
3 – Application for the elderly and infirm Those who, because of age, illness or other serious cause are unable to get around well, can pray in front of a statue of Our Lady of Fatima and spiritually unite themselves to the jubilee celebrations on the days of the apparitions, the 13th of each month, between May and October 2017. They also must “offer to our merciful God with confidence, through Mary, their prayers and sufferings or the sacrifices they make in their own lives.” (Source: LivingFatima)