They are happiest where most of the activity in the house is. The bird can also be trained to step up onto a dowel. Step up should bee practiced everyday until it becomes second nature. Practice away from the bird's cage as much as possible, especially if the bird is cage territorial and to eliminate distractions. Praise, praise, praise.
Quakers love it and it is much more effective than yelling.
If you yell, the bird will usually yell. If you are not already a QPS member, become one. Their publication, The Sentinel, comes out several times a year, chocked full of good articles. Behaved Parrot are good books to own. Remember that RAPP is always there for it's volunteers.