The following labels in Segments sections need to be changed:
1. In Segment Groups: Segment(s) under this group -> Segments under this group [screenshot 1].
2. Header in modal after clicking the Create button: Creating a new segment group -> Create segment group, Segment(s) under this group -> Segments under this group [screenshot 2].
3. In the tab inside the created segment group: Segment(s) under this group -> Segments under this group, the Add button changed to: Create [screeshot 3].
4. Header in modal after clicking the Create button: Creating a new segment -> Create segment [screenshot 4].
5. Add labels above fields in the Create segment group modal, respectively: Name and Identifier.