As outlined above, if you have the unit entitlements which will carry a poll vote your way, you can:
– set the number of Committee members at three
– each of you can nominate yourself as a candidate for the Committee (I am assuming you are not co-owners)
– if there are more nominations than the number of positions available, elect you and the other owner to the Committee.
If it worked out that the Committee had three members and you and the other owner were on the Committee, then you can determine who the office bearers are, because you have the majority of votes on the Committee (nothing to do with your unit entitlements).