Hi Nafissa,
You may want to use SMOKE mrgpt program to merge point source inline emission file and stackgroup file. More detail are in SMOKE User Guide but be aware that there are some discrepancies between the User Guide and the mrgpt program as reported earlier in the CMAS forum. We are work on updating the User Guide.
I attach here with a example script for running mrgpt.
merge_point_simple.csh (2.0 KB)