Hi there, further to Lou’s great suggestions above, you can look at a previous question on this platform that has an answer from an Industry Expert, Claire O’Connell, that may be of value to you –

Kia ora. How can I move a successful Marae based Kura Reo to online? 

I thought I’d share my experience of doing this in a really simple and cost effective way.
Registration happens on a website and then registrants are sent an invite to a closed Facebook group.
In the group you can live stream video lessons (or just upload video’s), you can create polls and events, upload study documents and additional materials and teachers can answer student questions.
Students can korero with each other and rewatch any of the video lessons.
The groups content is searchable and you can tag different content topics.
I’ve found it to be simple and effective.