I know this can be done with smart play list, but it would be good to have a filter on the main libary that allows you to apply more than one rule for Mpaa rating so when you create your kids profile you can filter the moves in the libary based on Mpaa rating.
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@yammers Apologies I seem to have provided you with a link to topic created by yourself where this question has already be answered. Although I feel I should point out, that if you followed the advise given by @ActionA
This all could have been avoided.
Anyway I think you may have more success requesting the feature here.