From AISC
"A director may have a relevant interest in securities even where they do not directly or indirectly own the securities. For example, a family trust may own the securities, a spouse or children may be the registered holder of the securities, or the securities may be held by a company in respect of which the director has direct or indirect control over 20 per cent of the voting power."
https://asic.gov.au/regulatory-resources/corporate-governance/corporate-governance-articles/director-share-trading-notifications-an-important-obligation/
So if a family member owns shares the director is said to have an indirect interest even though he he has no ownership in those shares
