Generally speaking, a legally constituted motion by the general body has authority over action taken by the board. So, if you think this should be addressed at a general unit meeting, the appropriate motion would be either one to endorse or one to rescind the previous decision of the board.
Passing a motion to endorse the original action would only have the effect of closing the matter. (Actually, go ask in the forums at
www.RobertsRules.com
for the requirements of a motion to reconsider a previous item.)
Passing a motion to rescind the original action would then leave open the possibility of a new motion to approach the matter in a different way. For example, a motion could then be made to appoint a task force to study appropriate further action. Or a motion could be made that PTO funds are not to be spent on the deck.
Remember that a motion cannot be amended to reverse the meaning. If the motion is made to endorse the decision, and it is obvious that the body wants to rescind it, they must first defeat the motion to endorse and then make a motion to rescind. Conversely, a motion to rescind can be defeated, at which point a motion to endorse can be made as per above comments.
Now, nothing says you have to bring this up. If you feel that the issue has been addressed in an appropriate forum, you are not required to do anything more. However, at the next general meeting the parent in question can attempt to introduce the motion as new business. And the parent in question could study the by-laws and arrange for the calling of a special meeting to address the issue.