define wp_posts

Hi,

hope you can help me.

I’ve 3 membership-websites.

I’ve allready changed wp-config so all users from one site can log in into every other site. (wp_users and wp_usermeta)
Everything works fine.

My last problems: If someone change his userpic on one site, it’s not changed on all other sites. The second issue is that the leaderboard doesn’t update on all sites.

I was looking for a way to solve this issues and I found that the pictures and the leaderboard data is saved in wp_posts database.

So my way of solution is to define the wp_posts and wp_postmeta of the second and third website to the database of the first like I made it with wp_users and wp_usermeta.

How can I do this?

define (‘__________’, ‘wp_posts_website1’);
define (‘__________’, ‘wp_postmeta_website1’);

I hope you can help me.
Much thanks and best regards,
Philipp