family share iWork

Hi Lucipag,

It is possible to Family Share the iWork apps on the Mac.

Share purchased content with Family Sharing - Apple Support

Mac

1. Open the iTunes, iBooks, or Mac App Store and go to the Purchased page.
2. To the right of Purchased, select a family member's name to view their content.
   
3. Download or play the items that you want.

And when I check the Mac App store, under the Information section at the right, it says:

Pages: Family Sharing: Yes

Keynote: Family Sharing: Yes

Numbers: Family Sharing: Yes

Enjoy

You are welcome, Lucipag.