Can anyone help and tell me ways that work to summon a DC?
You can stare at a door and expect the DC to come in. Or you can say “NN wil be behind the next corner waiting for me”. Or you can just look around in different rooms for the DC. It’s a good chance it will be there if you expect it to be there. 
Yea expect them to be some where then walk around a corner or through a door. That normally works pretty easy though some times you might not get exactly what you want.
ya, make sure you think positive thoughts for the DC or else your dream may turn into a nightmare! 
Yes, expecting them to be behind a door or around a corner is the best way to summon DC ‘s in the beginning. When you get experience you will be able to summon people out of thin air or even morph people into other people.