Objects can be cut, copied and pasted as many times as desired within the schematic canvas: Right-click on the object and select either Cut or Copy (or select the object and press Ctrl + x or Ctrl + c respectively).
Once cut or copied, you can paste the object by right-clicking over the desired destination and select Paste (or press Ctrl + v).
NOTE: Multiple objects can be cut, copied and/or pasted simultaneously (see Selection Features). Also see Smart Paste for more details on enhanced clipboard usage.