The Federal Government, in a new guideline it issued on Wednesday, stated that markets selling food would open from 10am to 2pm every other day.
Also, supermarkets and pharmacies are to open from 10am to 4pm every day, but must maintain a high level of hygiene.
The new guidelines also ban bus services during the lockdown. It adds that a mass gathering of more than 20 people is not allowed.
The Federal Government reviewed the lockdown on Wednesday just as COVID-19 cases rose to 174 with 35 new cases.
The Nigeria Centre for Disease Control had on Tuesday put the total number of COVID-19 cases in the country at 139.
Following the rise in COVID-19 cases in the country, the President, Muhammadu Buhari, on Sunday ordered the lockdown of the FCT, Lagos and Ogun states.
He ordered residents of the FCT and the two states to stay at home during the 14-day lockdown, which began in Lagos and Abuja at 11pm on Monday.
The President, however, exempted health personnel, journalists, workers of telecommunication and power companies from the stay-at-home order.
On Monday, Nobel laureate, Prof Wole Soyinka, and some prominent lawyers, including Mr Femi Falana, SAN, disagreed with the Attorney-General of the Federation, Abubakar Malami, SAN, over the legality of the lockdown.
In the new guidelines released by the National Coordinator for the fight against COVID-19, Dr Sani Aliyu, supermarkets, food stores, pharmacies and markets are exempted from the lockdown, but must operate under strict rules.
He said all residents of the two states and the FCT would be confined to their homes, except for the purpose of performing an essential service, obtaining essential goods or service or seeking medical care.
The coordinator also said, “Borders linking the two states and the FCT to the rest of the country will be shut during the period of the lockdown, except for the transport of persons on essential duties, transport of food, fuel, manufactured goods or donated relief items. Security agencies are please invited to note these.”