how would I do these two things to this circuit?

Implement this circuit using a 4-to-16 decoder and OR gates.

Part II

Using two 4-to-1 muxes, add a security override to the circuit for Part I.

C1 C0	Result
0 0	Circuit functions as normal
0 1	D1 is allowed to open and D2 remains locked
1 0	D1 remains locked and D2 is allowed to open.
1 1	Both doors remain locked

Elements GATES BASIC 21 ADDER FA Options No options available for this tool/element 21