Getting data into multireference

Hey guys!
We are doing a filmfestival site. Data comes from a central database, with updates from MySql → Zapier.

Question:
When an entry to collection “movies” is updated by Zapier: Can we have the data come into a multireference field?

Two main concerns:

  • What needs to happen is that the user can click Tags (a collection) and series (a collection).
  • A movie can belong to several categories at the same time (i.e. different school ages) that would have to be a collection in order to be navigable.

So does this need to be done manually?

T.i.a.
/Jesper


Here is my public share link: LINK
(how to access public share link)

Also:

If the above is not possible:
Will an update to a movies description or screening date and time then trigger a complete overwrite of that CMS item, or would it only update selected fields, so the manual Tag relation stays intact?