client booking3 appointment booking2 booking module2 calendar management2 crm addon2 crm extension2 multi provider2 real time availability2 saas booking2 scheduling system2 service booking2 staff scheduling2 worksuite crm2 analytics dashboard1 appointment booking system1 appointment module for perfex1 appointment reminders1 booking calendar1 calendar integration1 crm appointment module1 google calendar1 lead appointment scheduling1 meeting scheduler1 online booking system1 outlook calendar1 perfex crm1 productivity module1 saas crm1 timezone support1 user friendly interface1