It is up to the Brother Visitor to "admit" into the Signum Fidei those who want to become members of the Fraternity.

This admission requires a prior period of training in order to become familiar with the lifestyle that they desire to follow, the mission of Christian education in relation to the Institute of Brothers, what their commitment will entail, and also calmly discern if their motives are well founded.

After this training period, which is adapted to the circumstances of each District, members may make their consecration, with the approval of the Brother Visitor, and this consecration may be renewed annually.

In this way the Signum Fidei is part of the Lasallian Family and participates in the mission that the Institute received from God and from the Church.

The contact group or community is the ordinary place in which the member's spirituality and activities are nourished. Each group is structured and organized as an independent unit according to local circumstances.

In each District, the Brother Visitor appoints a Brother or another person to serve as advisor to Signum Fidei Groups. At the Institute level, the Superior appoints a world advisor for the Signum Fidei Fraternities.