Make a file with a database

Programmer services are required. You need to make a database file in Google Docs.

There are 40 instruments and 15 experts.
Every day, experts take devices for a certain number of hours and go to customers.

It is necessary to make a document in which the expert could go, choose the right day, the right time and choose the devices he needs.

If another expert comes in and wants to choose the same devices on this day and time, they should not be offered to him for choice (only the remaining possible ones).

Expert hours: weekdays - 5 days a week. Monday-Thursday from 8-17, Friday from 8-16. The minimum time interval for which the expert can take the device is -1 hour.

This is done in Google Docs to enable collaboration.