EJ25, EJ20 2004 Subaru Forester Cam seal replacement Leaking Cam shaft seals

how to remove Cam sprockets with 10mm Allen bolts with Engine still in the car and replace leaking cam shaft seals. I also go over how to replace tensioner and Idler pulleys and timing belt. timing cover, harmonic balancer, crank pulley. Leaking, leak engine dripping oil.