In Jain tradition, the Dharaṇendra Yantra is used as a worshipful and meditative diagram connected with Dharaṇendra Yaksha, who is closely associated with Lord Pārśvanātha. It is generally used for devotion, reverence, protection, and remembrance of Pārśvanātha’s grace, and in some traditions it is worshipped along with Padmāvatī. ( jainpedia.org)

It is important to understand that in Jainism, yantras are devotional aids, and their use can vary by tradition and community practice. The best-known Jain yantra is the Siddhachakra, while Dharaṇendra yantra is specifically linked to Dharaṇendra Yaksha. ( jainpedia.org)

If you want, I can also explain its symbolic meaning in simple Jain terms.