This easy to use tool offers a streamlined way to communicate to many TrainingSpaces at once and to bulk invite new members. Here's how to create a Segment:
Navigate to Segments and tap "Create a Segment" or the "+" icon in the top bar.
Add a name and select from a list of Spaces to add to the Segment.
Tap "Create" in the top bar and your Segment is created. To post media to all the Spaces in the Segment, tap "Post to Segment" or the orange capture button. To invite members into all the Spaces, tap the person icon in the top bar and select members there.