Hello there,  I am trying this plugin for our small business. First of all, let me say: Thank You ! It id very well made!  However I have one issue ( maybe you are already aware or reported by others? ) 
I only have one worker, but I need 2 different Services (one 15min and the other 30min) but when we test it, for example If I have booked the worker for a 15min at 10am, and then try a 30min ( the other service) service, it will show the 10am as free??  Is there a fix for this. Your help would be highly appreciated.  many Thanks  Andrea