Restricting access to h5p all content

Hi,

Firstly, please accept my congrats for a wonderful contribution to the world of interactive learning.

I'm not a techie, but love the menu driven easy to use wordpress and now H5P. I wish to empower the content creators with h5p authoring power.

I'm creating a wordpress site were content developers / teachers can use the versatile H5P to produce interactive learning stuff.

Since the access is from the wp-admin area, I assigned user role = author using "Ultimate Member" Plugin.

I customized the wp-admin area using "Absolutely Glamorous Custom Admin" Plugin.

I limited the access to user specific content in the media library using "Frontier Restrict Media" Plugin.

I limited the access to user specific content in the posts using another "Frontier Post" plugin.

But I am unable to limit access to user specific content in the "All H5P Content".

Any author role user doesn't come to know of other's content till the hit Add H5P button in the post.

Can you please guide me on how can make the user see only content created by them in that place?

Thanks in advance for your support.