Based on the provided tables (showing Sales team channels and Planning/Budget channels with their privacy, roles, and members), User2 can add User5 as a member of the Budgets channel.

Based on the provided tables, User2 is an owner of the Budgets private channel. Private channel owners have the explicit ability to add and remove members within their channel, independent of their role in the parent team, so User2 can add User5 as a member of the Budgets channel.

Stating User2 cannot add User5 is incorrect because private channel owners have direct member management rights within their channel, and User2 is designated as an owner of the Budgets channel.