In SSMS sometimes you can get 10 or even more tabs in one group. A group like this takes lot of space and can be hard to manage. I’ve added the Maximum number of tabs in a group option that breaks extra large groups:
Maximum number of tabs in a group option
Default value is 7. For example, 9 SQL queries are now organized in two groups instead of a large one:
SQL query tabs organized in two groups
Setting the Maximum number of tabs in a group option to 0 allows any number of tabs to be combined in one group.
Tabs Studio Blog (organizing Visual Studio document tabs) 