How to synchronize the local 1s database and the Bitrix 24 system?

Question

CRM

1. How to transfer counterparties from 1c to Bitrix 24
example: there is a working base 1c - you need to transfer existing counterparties to CRM (Bitrix 24)
(is it possible to enter new customers coming from the site into the 1c database?)
2. Synchronize the order coming from site in Bitrix24 with 1c at all stages.
For example:
- a company that has submitted an application on the website
- an invoice is issued for payment
- services are provided
- the application is closed (an invoice and an act of completion are issued)
- information should be reflected in 1s

Answer 1

for you, two exchanges have created
1cworks.com
www.modber.ru/freelance
and another section "Work" on the forum 1C nicknames