I am running a multisite network on the latest version of WP. I am the Super Admin.

I setup a user as "Administrator" on a site in the network. The Admin User can see plugins but cannot install them (i.e., there is no Add New button on the plugin screen).

I am ever running WP User Role Editor plugin and the ability for an admin to install plugins is checked.

How can I give the secondary/alternate Admin the ability to install plugins?