Transform Zimbabwe leader Jacob Ngarivhume, who has been leading calls for the planned July 31 protests, said the action they were taking would not be partisan.
"We are doing this for the general people of Zimbabwe," said Ngarivhume whose party was part of the MDC Alliance coalition during the 2018 elections.
"I am just their front taking a lead in this time of crisis.
"As we speak, I am coming from a meeting with businesses who have expressed a willingness to confront and bring an end to corruption, which is pulverising their business."
He said various interest groups wanted to send a message to government that it could no longer be business as usual.
"It's time we stopped talking in small corners and converge as a nation against these ills," Ngarivhume said.
"We are even appealing to those in Zanu-PF who are tired of this government to join us on July 31 to say enough is enough."
He said they would seek police clearance to hold the protests and take measures to ensure that the demos do not fuel the spread of Covid-19.
"On Monday (tomorrow) we will be notifying the police of our intended demonstration," Ngarivhume added.
"We will also make sure that we have face masks and that social distancing is observed during the demonstration.
"So we are going to respect all regulations while demonstrating."
Prior to the lockdown, Mnangagwa's government dealt ruthlessly with dissent.
In the last two years, soldiers have been unleashed on protesters resulting in the death of several people and abduction of activists.
— The Standard