There are three chains. The first set you need to be concerned with is the secondary chains the operate the cams. Here is how to do them. This is how to do the items you are questioning, but if you need further help, let me know.
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Tighten Tighten the left timing chain tensioner shoe bolt to 25 N·m (18 lb ft).
Tighten Tighten the left timing chain guide bolts to 25 N·m (18 lb ft).
Tighten Tighten the right timing chain guide bolts to 25 N·m (18 lb ft).
Tighten Tighten the chain guide access plugs to 4.5 N·m (39 lb in).
Important: Make sure the tensioner release lever faces toward you before tightening.
Tighten Tighten the secondary drive chain tensioner bolts to 25 N·m (18 lb ft).
Tighten Tighten the camshaft sprocket bolts to 120 N·m (90 lb ft).
Tighten Tighten the camshaft position sensor retaining bolt to 10 N·m (89 lb in).
Here is how to do the main chain. Let me know if you have any problems or if you need any further help.