No – unless they own two properties.
Under section 31 of the Act co-owners of a lot can only both be on the committee if they also own another lot. Basically, it’s one seat per lot.
31 Persons who are eligible to be appointed or elected to strata committee
(4) Only one co-owner (including a company nominee of a co-owner) of the same lot may be a member of a strata committee at the same time, except as provided by subsection (5).
(5) A person who is an owner of more than one lot in the strata scheme may nominate one person for election as a member of the strata committee for each lot for which the person is an owner.