How to include custom section in Global search

Hi team,

According to this article : https://academy.creatio.com/docs/user/platform_basics/user_interface/command_line/the_command_line

"To include certain section’s data in global search results, open the section wizard for the necessary section and select the [ Indexing for full-text search ] checkbox. Learn more about indexing in the “Configure section properties” article."

But I can't see this checkbox on the development instance(7.x latest version) to include the custom sections in global search.

But in the trial instance (8.x version) when I open any section using section wizard the check box "Indexing for full-text search" is available.

Can you please tell us how can we include our custom sections in global search?

Many thanks!