International calls Addon - Zoom mobile

Hello community,

I do have for a few months an addon for international calls with my regular plan.

I'd like to know if it is possible to manually deactivate (on my side) the add on for international calls, for example in the months of July and August, and manually reactivate this add on at the beginning of September?

My question is whether it is possible to do this on my side (autonomously in my client area) or if I have to send support an email to deactivate and another one when I need to activate it.

Thanks for your help.