How to import automatically from Gcal into Appointments+ on frontend?

Hi,
Yes i have checked Appointments+ plugins usage page
https://premium.wpmudev.org/project/appointments-plus/#usage

i want the synchronization to be 2-way:
when an appointment is made on your site, export it to Gcal is working fine,

but when we block off time in Gcal, import that into Appointments+ is not automatic. we have to confirm from admin section. but we want to it has been automatically when we block off time in Gca.

let me know how can do it.

I have give Grant access. please check it.

Regards,
Ramesh Chand Pandey.