Hi there,

However, the announcements are not displaying in the main news feed.

As you can see, this "Announcement" is only for your groups only, as this is for announcement for your groups itself only. Same with other such as event and pages. But, having said that, if you require us to perform the customization for you, you can always request for a quote from us at https://crm.stackideas.com and select "Customization". Our sales person would be glad to send you a quote for the customization that you have requested.

Thanks for your understandings