After asking a series of questions to social security regarding the simplified lay off, we received the following answer which we share with you:

Regarding your contact, for which we thank you, we inform you that in relation to the simplified layoff, a legal diploma will soon be published to support this exceptional measure of Support to the maintenance of employment contracts in a situation of business crisis. Therefore, you should not submit any request for this support yet, until the publication of the form, which is soon.
Thank you for your understanding.

Through the Internet, in Social Security Direta at https:// www.seg-social.pt/consultas/ssdirecta , you can access several functionalities, namely
View personal data (identification, insurance history), change IBAN, request benefits and pensions, request the European Health Insurance Card, request declarations, contact us by email.
On the Social Security Portal you can also obtain information on Social Security products and services, access the Practical Guides at www.seg-social.pt and print forms.
The personal data submitted will be processed by the competent services of the ISS, I.P. for the purposes of this application and will be kept for the time strictly necessary for the pursuit of these purposes.
The ISS, I.P. is committed to protect your personal data and to comply with its obligations under data protection. For more information on data protection at the ISS, I.P., please consult the website at www.seg-social.pt.

For any further clarification, please do not hesitate to contact us.