Try ToDo List

170804:  It appears that there is a single todo list for the whole network.  It’s not enabled per site – it’s per network.  This post is not part of it.

This post is to see how to integrate a todo list item.  Don’t ee any options of mention of the plugin anywhere – but it appears it’s enabled for all sites.

It probably needs to be enabled for this specific site – which is the default site for the network.