Does ManageWP work with Multisite installation?
ManageWP does support Multisite Networks. You need to network activate the ManageWP Worker plugin in your network admin first. Then, add the main site to ManageWP and choose which sites you want to import to dashboard.
Please note that, at the moment, ManageWP supports all features for Multisite networks except Backup, Restore and Clone features due to different website structure and logic.
In order to enable those features, split your websites into separate WordPress instances and manage them via ManageWP.
Updates are available if you add your network parent website with network admin user.