Pictures not show in a grid format in activity

Hello @Aqeel_Iqbal,

As the HTML layout is dependent on your theme, we could not be sure for the exact fix for your theme.

However, you can try the similar thread and the sample custom CSS here - http://community.rtcamp.com/t/display-pictures-on-activity-wall-side-by-side/4519/3

Give it a try for 3 columns:

.rtmedia-activity-media-length-3 {
    overflow: hidden;
}

#buddypress ul.rtmedia-activity-media-length-3 li {
    display: inline-block;
    float: left;
    padding-left: 2px;
    padding-right: 2px;
    width: 33.33%;
}

.rtmedia-activity-media-length-3 .rtmedia-list-item > a {
    display: block;
}

Thanks.