There are many forms of ministry among Friends. We are all called to different ministries at different times. Meetings can choose to support Friends who have a leading to ministry in a variety of ways.
Read about ministry within the meeting here: What-is-Ministry-Schurman
Clearness for a Leading or Ministry
A clearness committee is a group appointed to support a member of the meeting in discerning a leading. Clearness committees may also play a role in helping the meeting gain clarity around how they should support the ministry of that Friend.
The committee follows a particular structure that you can read about here: Guidelines for Clearness for a Leading or Ministry
Care of Friends Led to Various Forms of Ministry
When a meeting takes a Friend and their ministry under its care they agree as a community to support the Friend in delivering the ministry. Often they will ask the whole community to hold the individual in prayer and take a particular interest in the ministry and its fruits. Some meetings may offer to appoint a group to focus on supporting the individual and on holding them accountable. This group is called a support or anchor committee.
Read more guidelines for caring for Friends led to ministry here: Guidelines for Care of Friends Led to Various forms of Ministry