You can apply to your lender to forgive your loan for the amount of payroll costs plus payments of mortgage interest, rent, and utilities incurred during the 8-week period after the loan is disbursed. The amount that can be forgiven is proportionate to maintaining employees and wages. You must apply through your lender for forgiveness and provide:

Documentation verifying the number of employees on payroll, their pay rate, IRS payroll and state income tax filings, and unemployment insurance filings;
Documentation verifying payments of rent, mortgage interest, utilities, and other debt; and
Certification from your business that the documentation provided is true and that amount of the loan that is being forgiven was used in line with the program’s requirements.
Any loan amounts not forgiven are carried forward as an ongoing loan with max terms of 10 years, at a maximum interest rate of 4 percent. Principal and interest will continue to be deferred, for a total of 6 months to a year after disbursement of the loan.

It sounds like the more people you let go, the more gets forgiven, but it is not entirely clear from the description.