To hide the visibility of a plan hover over the plan name and click on the eye icon.
The plan will now be greyed out and the eye icon will have a line though it. to unlock click on the eye icon with the line through it.
To hide the visibility of all plans contained within a folder click on the three vertical dots next to the folder name and select Hide.
To show the visibility of the plans contained within a folder click on the three vertical dots next to the folder name and select Show
.