How to restrict movies to a user

Here is the scenario.
I have a tablet for my 4 year old.
I have already restricted him to G ratings only.
But the problem is, many older movies are rated G. Like a lot of my collection of John Wayne movies etc.
I really only want him to be able to access G rated animation.

Is there a way to do that?

You can add Labels to the films you want your 4 year old to have access to, and then restrict the viewing to only Movies with that Label

REF: https://support.plex.tv/hc/en-us/articles/204232573-Restricting-the-Shares

I thought of that, but with over 200 animated films, is there either a bulk labeler I can use, or an easier way than labeling all 200+?

Use the SELECT button, then after tagging the films click edit and then add a label to all of the films that you selected.

See: https://support.plex.tv/hc/en-us/articles/200392126-Using-the-Library-View

Select
The Select button allows you to select multiple items simultaneously to perform actions on them. Enable Multi-Select with the button in the left actionbar. You can then click or drag on the Library contents to select items.

Wonderful! Thanks!