I seem to have got myself in a muddle or lack of understanding of licenses and services required.
I wish to set up a share point site and publish a Microsoft Access application for multiple users. For testing I have 2 SharePoint online plan 1 licenses, and when I log in at portal.microsoftonline.com can see that I have Admin for Sharepoint and Admin for Office 365 which I can switch between.
It does not allow me to change plans to online plan 2, which is what I think I need, and nowhere can I see 'Add Action' for Access App.
Am looking at SharePoint as alternative to terminal services for an existing application that 10 companies use, so need separate instances\sharepoint site for each company. What licenses, plans, services do I need to deploy as a minimum and then what for the users again as a minimum to reduce costs. I.e can one sharepoint site provide 10 private sites that use an Access App etc.