How to add multiple pins in a group of constraint

Hi all,

In one of our board, for a SRAM group which having series resistor's as terminators, for delay tuning, I wanted to add the traces from FPGA to resistor and from resistor to SRAM in a group to match its total length. But I'm unable to add the traces of before and after resistor in same group. Attached a screenshot as an example, in which MG4 is a match group and N19926395 is trace from FPGA to R and SRAM_A5 is trace from R to SRAM IC. I wanted to add both nets in same group which showing total length. How can I do it and for the whole group(A0 to A16)? Any other way? Any input will be appreciated.

Tool using: OrCAD PCB Designer Professional v16.6 with hotfix s055

Thank you,

Shiva.