Installation in your template
1) Login to bitrix
2) From admin panel. Go to site template Control Panel/Settings > System settings > Websites > Site Templates
3) Click "Three Lines" and select "Edit"
If you forgot about what template you are using on your site, you can see it in this section: Settings -> System settings -> Websites -> Websites-Modify.
You can see a list of all templates, used on all of your websites.
4) On the next step, paste the GtChatPro code before the </body> tag. Make sure to save your new settings by clicking the “Save” button.
The GtChat code is available in the Gtchatpro, in the Channel section: Dashboard > Channels > Add New if you already created a channel then Dashboard > Channels > Manage> Edit
Note: If you use multiple templates, you will need to install the GtChatPro code on each template.