In 2v2 Riftbound, can teammates place units at the same battlefield as defenders, and what actions can you take on your ally's turn?

Ruling: You and your teammate's units cannot share the same battlefield. You can play spells on your teammate's turn.

Nuances:

• In 2v2, points go up to 11
• First player doesn't draw first card
• Last player gets an additional rune
• Your teammate's units are considered friendly units