Paul was convinced about the place of elders in the building of the body of Christ:
"For this reason I left you in Crete, that you should set in order the things that are lacking and appoint elders in every city as I commanded you,” Titus 1'5.
From what he says he had preached the Good News throughout the island of Crete but he had not been able to complete the work.
However, he was confident that Titus could. He knew him well. He called him "a true son in our common faith" and "my partner and fellow worker" (Corinthians 8'23).
Titus had a heart for the Lord's People. Thanks "be to God", Paul had said, "who puts the same earnest care for you into the heart of Titus" (2 Corinthians 8'16).
The kind of man to appoint elders!