Dear Odoo community,

I am currently trying to find out how to use Odoo to manage SaaS subscriptions. My goal is to enable our clients to manage their subscriptions. They should be able to change the number of seats (upsell). As far as I understand the documentation correctly only internal sales agents can do this upsell in the subscriptions module. Is it a correct assumption that a client (portal user) can not change their subscriptions in the portal?

If this is true what would be a good implementation approach?

Is it a feasible option to build a custom plugin for the portal that adds this feature?

I really appreciate any information or best practices in this area.

Thanks a lot

Niels