Reply To: How do I change the activity-greeting copy?
Inside your theme, make sure there is a file wp-content/themes/your-theme/buddypress/activity/post-form.php. If there is no file in that location copy this file wp-content/plugins/buddypress/bp-templates/bp-legacy/buddypress/activity/post-form.php into the first location.
Then, look at line number 28 – 32 of post-form.php.
From there, you will notice you can change this text for the activity update form which reads “What’s new in “GROUP NAME” if you’re on a group page posting the update or “What’s new USERNAME” if you’re any where else.
So, to swap in a specific profile field you’d need to supply a bit more about the nature of your project and how it’s setup. You could simply drop in some static text, but if you want it to relate to a specific profile field in a dynamic way then please elaborate further.
