There has been no commitment from the government to assist with commercial rents. There is plenty of advice around and some good articles in the news, e.g. this one:

https://www.newsroom.co.nz/2020/04/21/1137725/does-clause-275-apply-in-level-3

My advice: talk to your lawyer, talk to your landlord, and don’t agree to anything.

Stay safe.
Matt