Pursuant to Regulation (EU) No 2015/1998, entities implementing security controls are required to implement internal quality control mechanism so to ensure that measures defined in their security programmes are effectively and consistently implemented.
Preparing, conducting and documenting such quality control activities can be burdensome exercise, especially if you are not fully familiar with either quality control or aviation security principles.
Instead you could hand the job to experts with significant international experience in the field. Highly qualified auditors with considerable Appropriate Authority background offer you unbiased view on how things really are and if necessary, may suggest possible improvements that your company could benefit from.