Hi there
How can I implement a chat with technical support, which service you recommend to do this. Assuming I just have followed all the guide. 
Regards!
Do you mean the chat bubble that you see in a lot of websites?
Yes! That one!
Regards!
There are a few different services these days for this. The most popular one is Intercom but they are also very expensive. We’ve used HubSpot, there’s also Drift, etc. There are some other free options out there as well. It depends on your budget in many ways.