BuddyPress Post from Anywhere plugin allows you to post activities for BuddyPress or BuddyBoss Platform using shortcodes for any page or any CPT post. You can use the shortcode [bppfa_postform] at any pages or inside template files. So for this navigate to Dashboard >> Pages / post and add the shortcode.
Now navigate on the page/post where you have added the shortcode. So here you can see the what’s a new section to update the post.