# How to control the qubits in IBMQ

I am trying to perform OTOC for my 7 qubit protocol. I need to carefully control and use only 7 qubits but after making measurement in the 16 qubit Melbourne system (ibmq_16_melbourne) my protocol gets transpiled in all of the 16 qubits.

Is there any way (some codes in qiskit) to use only 7 qubits of the 16 qubits in IBMQ Melbourne, so that it uses only 7 qubits which I have used in the protocol for transpiling and measurement and not more? Or is there any other quantum computer available on which I can do this?