You do. Look under Membership. Your association will discuss support of declared delegates.
4.2.4 vote for, and stand for election as, a delegate or alternate delegate at any meeting called by an electoral district association in which that person resides or serves as a board member, for the selection of delegates or alternate delegates to any national convention of the Party;
https://cpcassets.conservative.ca/wp-content/uploads/2019/04/03155337/KXBCNkWf-X3IDtR.pdfSee also National Conventions 7.5