Block 2 hours time-slot from server local time

Hello world !!

We use appointment+ for a “to-home-service” (we go to clients houses)

Let’s say it’s 12h30 pm… a client can book an appointment in 30 minutes… It’s impossible for us to go there is 30 minutes, we need a 2 hour frame. So if it’s 12h30pm… the next availability should be 14h30 and later…

I thought the “Appointments lower limit (hours)” option will worked but it’s not :

See this screen shot :

Thank you.