How to welcome new members in a FB group

Just click on the NEW next the the number of members, a windows of all the new members will appear, you can click the SEE ALL to view all of those new members. 



How to delete post / comment in a Facebook group.

To delete any post in Facebook group you can click the little arrow at the right side of any post, click it and a drop down menu appear, select the option to delete the post.

A confirmation box will display, just select Delete.



To delete comment, just move your mouse pointer at the upper right corner of any comment, an X will appear, you can either remove or report.