Apologies if this has already been asked and answered.

I am new to the PDM Universe and have been tasked to set it all up for my company. I set up a workflow and ran a test part and drawing through it last week successfully! Now the drawing file is as a and the model is as Released to Production. I tried deleting them earlier today just to get them out of the system and I must have changed something. I don't know what I did. As I was trying to delete the files I go a message that I don't have permission to do that Where I believe I should. Any thoughts?  Appreciate the help.