I have many2many field combined with tree view:
<group>
<field name="cpu_ids" widget="many2many">
<tree>
<field name="name"/>
<field name="frequency_base"/>
<field name="frequency_tb"/>
<field name="cores"/>
<field name="threads"/>
</tree>
</field>
</group>
And when I choose one particular record I can not pick it again for the second time.
In this example I would like to be able to pick the same CPU couple times.
How do I do this?