Calendar and ideas to fix a problem

I am the owner of a medical clinic and we have several specialists.

My need is to have a Noloco calendar with more features that allow me to align the appointments with the calendars of multiple specialists, also allowing me to enter the various availabilities.
With the current functionalities of Noloco, this is not possible for me.

Therefore, I am writing to you, the community, to know if anyone has or has had the same problem and how they solved it with external tools that can be integrated with the “iframe” function of the blank page.

Solutions? Ideas?

Thank you and have a good day everyone!

Attached you will find an example of what I need.