finding crontab and permissions

hi ,
how/where to find crontab and permissions that whether my user id has crontab permissions or not .
I need to schedule one job through one application(datastage application) which is installed on sunsolaris envirobnment. When i try to schedule job/s, i am getting error that

"Error adding to schedule: at: you are not authorized to use at. Sorry. 
(Command was: at -s 00:15 MAY 16) 
(Data was: /vol01/dsadm/Ascential/DataStage/Projects/Test_MaRS/dsr_sched.sh /vol01/dsadm/Ascential/DataStage/Projects/Test_MaRS /vol01/dsadm/Ascential/DataStage/DSEngine SPMSeqPT 0/50/1/0/0 2 >/dev/null 2>&1) "

please help me out to get out of this issue .
Thanks in advance for all your support.

You will need root access to answer this question. If you are not the administrator of the server, then ask the administrator. As a non-root user you will not be able to read the permissions files.

You clearly do not have permission to schedule at jobs through cron. Unless you only want to run the job once you woud not use at , you would create a crontab entry.

they are in:

/etc/cron.d/cron.allow
/etc/cron.d/cron.deny
/etc/cron.d/at.allow
/etc/cron.d/at.deny

Thank you for your information.