As GMcNamara said, you can easily schedule 4 jobs to run 5 minutes apart in Infoview. By doing so, you can specify wthe parameter values you want to use with each instance.
If the parameter is datetime related, then perhaps a formula can be developed to look at currentdatetime and make the appropriate adjustment.
Bottom line, we need to know what is affecting the parameter value change for each run.
-lw