I have 4 different hierarchical blocks that look like the one below. They all have 4 inputs (switches in each block) and 7 outputs (going to 3 seperate seven segment displays) , which are going to seven segment displays. I need to use 2 switches in which HB1 will display when OP = 11 (switch 1 and 2 are both on), HB2 will display when OP =01 (switch 1 is off and switch 2 is on), HB3 will display when OP = 10 (switch 1 is on and switch 2 is off), and HB4 will display when OP = 00 (switch 1 and 2 are off). I'm attempting to complete this in multisim. Thank you in advance for your help.

HB1 X1 X3 Subtractor Chip HB1 X1 X3 Subtractor Chip