Two Multisite quesitons

Hi,

thanks for your post.

#1) No, this is not possible, sorry. Single sites in a Multisite installation are designed to be independent, and no data is shared. Each site has its own copy of everything.
Also, sharing usually doesn’t make sense, as things in a table, like the head row, will likely need to be translated anyway.

#2) There’s nothing really to experience here. Just treat your sites as independent, so that you’ll basically maintain two independent sets of tables, one for each site/language. You can of of course make life easier, by exporting a table from one site to a file (I recommend the JSON format here) and importing that into TablePress on the other site. In the posts/pages of each site, you can then just use the respective Shortcodes for the tables of that site.

Regards,
Tobias