Hey, for anyone that need this, I have customize the group header display admin to smaller size avatar and display the admin and mod in a straight line. But requires to edit the buddypress file, if you are not comfortable editing the buddypress file dont use this.
First add this css to your theme css:
.adminn{ display:block; float:left; margin-left: -27px; }
Open the file buddypress | bp-groups | bp-groups-templates.php.
Around line 570 find this line:
<a href="<?php echo bp_core_get_user_domain( $admin->user_id, $admin->user_nicename, $admin->user_login ) ?>"><?php echo bp_core_fetch_avatar( array( 'item_id' => $admin->user_id, 'email' => $admin->user_email, 'alt' => sprintf( __( 'Profile picture of %s', 'buddypress' ), bp_core_get_user_displayname( $admin->user_id ) ) ) ) ?></a>
Replace with this line:
<a class="adminn" href="<?php echo bp_core_get_user_domain( $admin->user_id, $admin->user_nicename, $admin->user_login ) ?>"><?php $width = "20"; $height = "20"; $adminname = "$admin->user_nicename - admin"; echo bp_core_fetch_avatar( array( 'item_id' => $admin->user_id, 'email' => $admin->user_email, 'width' => $width, 'height' => $height, 'title' => $adminname, 'alt' => sprintf( __( 'Profile picture of %s', 'buddypress' ), bp_core_get_user_displayname( $admin->user_id ) ) ) ) ?></a>
Also remove the <li> and </li>
around it
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At around 593 line find this line:
<a href="<?php echo bp_core_get_user_domain( $mod->user_id, $mod->user_nicename, $mod->user_login ) ?>"><?php echo bp_core_fetch_avatar( array( 'item_id' => $mod->user_id, 'email' => $mod->user_email, 'alt' => sprintf( __( 'Profile picture of %s', 'buddypress' ), bp_core_get_user_displayname( $mod->user_id ) ) ) ) ?></a>
replace with this line:
<a class="adminn" href="<?php echo bp_core_get_user_domain( $mod->user_id, $mod->user_nicename, $mod->user_login ) ?>"><?php $width = "20"; $height = "20"; $modname = "$mod->user_nicename - moderator"; echo bp_core_fetch_avatar( array( 'item_id' => $mod->user_id, 'email' => $mod->user_email, 'width' => $width, 'height' => $height, 'title' => $modname, 'alt' => sprintf( __( 'Profile picture of %s', 'buddypress' ), bp_core_get_user_displayname( $mod->user_id ) ) ) ) ?></a>
Also remove the <li> and </li>
around it
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A small issue when using this, if your group name is too long and you have several admin or mods, the name will overlap the avatars, if you have short group name limit than shouldn’t have much problem. Maybe someone with good css skill can help with this.