Iam having trouble with my 273 v/8 and a push button tranmission

I am new to the mopar car hobby and i am having problems with the engine in my 1964 valiant.We try and get it to crank but we can not get it to move It seems as the motor is seized But i have just bought a owners manual and it states the motor will not crank unless the transmission is in neutral and the park lever is in the lock position As this is my first car with a push button transmission Can anyone tell me the correct steps to take to try and find out if this motor will move or is it seized .THANKS for your time in this matter any help would be welcomed












\3 V8