As of today, it is only possible to publish a tile to a workspace for a single legal entity (the one you are currently using)

If the same tile is needed for another legal entity, it has to be created from scratch

The option to publish a saved view allows for selection of multiple legal entities, but in the next step (configurin the workspace) there is no option for this

I suggest allowing the configuration of workspace tiles for multiple legal entities, similar to the publishing of saved views