Use the artes that can do linked artes when the chain icon is out... example: X at first and u pressed R2 to start... then maybe Down+X for the next skill.. rmb your partner mus be of the relevant linked artes users.. u can change your partner anytime..
You have to know the limitation to each Chain Arts and when to use them, if you don't then you'll just waste the OVL for nothing. Some causes knockback, others, knockdown, etc.
For example, my usual pattern (if enemy has no weakness) is: Genbuzan (knockup) Aerial Fire (knockup) Ensenjin (ground knockdown) then finally Zeppuujin.(push-away) --- Playing: Tales of Xillia & Agarest 2 (PS3J) | Want: FFXIII-2 (PS3E), Diablo 3 (PC) http://www.youtube.com/MasterLL