You can add, remove, or update permissions with the -p option.
For example, to add read and write permissions on a folder, enter the following text at the prompt:
pmrep AssignPermission -o folder -n Sales -u Admin -p rw
You can also update permissions on an object. For example, you assigned permission to read on a folder and need to include permission to write. To update permissions, enter the following text at the prompt:
pmrep AssignPermission -o folder -n Sales -u Admin -p rw
To remove all permissions, enter the following text at the prompt:
pmrep AssignPermission -o folder -n Sales -u Admin -p ""