Process chain issue

HI to SCN,

Suppose I have the process chain of 6 steps in that there is an error in the 4th step , by finding the variant I can resolve the  error but my question is  actually in the process chain of 4th step  the job is scheduled at  11'o clock ,but after resolving the error in 4th step the time is 11:30 am so how to do the job ?

I am waiting for early reply.

Thank you