Override ‘core’ plugin pages

Hello, I’m trying to override a core plugin page, um-account.php in my child theme but it doesn’t seem to be working.

I’ve created a folder in the child theme: my-child-theme/ultimate-member/core/um-account.php but this does not override when tested.

Could someone tell me if this is/would be possible?

If I have to use hooks in the functions.php file could someone point me in the right direction?

Thanks in advance!