how to rename a playlist

Hello, I am trying to rename a playlist I created on my Mac mini (it is also on my iPhone XR. Can you please explain to me how to rename a playlist as I can't see any way to change the name of the playlist even though it is named correctly on my iPhone and editable after syncing my iPhone to my Mac mini the playlist still remains "untitled playlist". Clicking on the title in iTunes for my Mac does nothing. I do not see any editable features for the playlist. Thanks so much for your assistance. A google search inquiring how to do this brings up very old community support topics. Namaste!