These very special rites are celebrated on the middle three Sundays of Lent, at liturgies where the Elect are present.  The Elect are those in our midst who are preparing for Baptism.  Part of their journey to the font is that they have been received among us, the Rite of Acceptance, and they have been enrolled in the Book of the Elect in the Rite of Election.  
Even if these rites are not celebrated at the liturgy we attend, or not celebrated in our parish or congregation at all, it can be wonderful to reflect upon the journey these Elect are making during Lent, as an inspiration and source of renewal for us in our journey. 
These are ancient rites and they may, at first, seem strange to us.  But they are profoundly rooted in our human experience.  We need to examine (scrutinize) how we are, the areas of our lives where we are tempted, or seriously sin - in what we do and what we fail to do.  We really need healing and the strength that can come from the support of our sisters and brothers. 

From the Bulletin