A more thorough explanation:

An original main motion is a formal proposal made by a member of a group or organization during a meeting. It is the first motion made on a particular topic and is used to introduce new business or ideas for discussion and decision-making.

For example, during a school board meeting, a member may make an original main motion to propose a new policy for student dress code. This motion would be the first step in the process of discussing and deciding whether or not to implement the new policy.

Original main motions are important because they allow members to bring new ideas and proposals to the group for consideration. They are the starting point for discussion and decision-making, and help to ensure that all members have a voice in the process.