I want to be able to lock views

This means that users who have been invited to this view cannot change the filters.

This allows me to limit the view of tasks in my list.

This is very useful when you have a list with z.B. vacation requests. For data protection reasons, only the responsible department head should be able to view the vacation requests.

It is possible to protect a view, but users can delete the filter. This is not saved, but the entire list can therefore be viewed.