Custom press Basic Question

Hi, Can I just check the use of custom press.

Am I right in thinking that I can set up Multisite, install custom press as a plugin and define custom posts, taxonomies and custom fields.

These custom posts etc will then be used on every site in the network no matter what theme or child theme the individual sites use?

(I see I can enable the plugin so that individual site admins can create their own, but I am not interested in doing this for this project).