The MAC have noticed a gap in the responses for NI in the areas of STEM and manufacturing and so have opened up their online form to receive any further submissions in these occupational groups/sectors.
The link to the form is here: https://www.homeofficesurveys.homeoffice.gov.uk/s/SOL2018/
Once you have put your email address in you receive a password (check spam folders) and enter details.
This form will only be open until close of business on Thursday 7th March so you have a week to respond.
More information about the original Call For Evidence is here: https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/769700/sol-call-for-evidence-extended-deadline.pdf