Run application row wise for particular column

I have excel sheet named abcd .I wan to run an application for one column of all rows.If one row tasks completes then it will choose second row and run application and so on.
i want to make workflow for this in process transaction(REF)

eg
Column Name (xyz)
a
b
c
I want to run for a,b,c one by one for column xyz

@Ananya1

Have you tried anything? Are you getting any error?