There is a last day you can enter the Portal, but there is not a last date to commit somewhere.
I edited this post - it IS called the "notification of transfer" deadline but that only refers to your entry into the portal. You do not have to have "landed" by then.
Interpret your response. Fall and winter sport athletes must enter portal by May 1. It does not mean they must have picked their new team by May 1
I was misinterpreting what I was reading. "Notification of transfer" only indicates a notification to your current school of the intention to transfer. Thanks for the correction, I'll update my other post so as not to misinform.
before the end of the semester so they can join their new team for the summer practices