How do I configure my solaris 8 machine to run a job using at scheduler, as a different user. my at job only run as a root user, but i want to configure users to run at job.

I try to run a job to copy file like

at "time" </copy_script

but this only run, if I run as a root user.

the file being copy is own by user called tony and i would like user "tony" to be able to schedule the job without su to root.

Thanks you