--- loncom/interface/lonparmset.pm	2020/02/10 02:11:46	1.594
+++ loncom/interface/lonparmset.pm	2020/02/10 19:48:56	1.595
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler to set parameters for assessments
 #
-# $Id: lonparmset.pm,v 1.594 2020/02/10 02:11:46 raeburn Exp $
+# $Id: lonparmset.pm,v 1.595 2020/02/10 19:48:56 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -5405,6 +5405,18 @@ sub dateshift {
     my $dom = $env{'course.'.$env{'request.course.id'}.'.domain'};
     my $crs = $env{'course.'.$env{'request.course.id'}.'.num'};
     my $sec = $env{'request.course.sec'};
+    my $secgrpregex;
+    if ($sec ne '') {
+        my @groups;
+        if ($env{'request.course.groups'} ne '') {
+            @groups = split(/:/,$env{'request.course.groups'});
+        }
+        if (@groups) {
+            $secgrpregex = '(?:'.join('|',($sec,@groups)).')';
+        } else {
+            $secgrpregex = $sec;
+        }
+    }
     my %data=&Apache::lonnet::dump('resourcedata',$dom,$crs);
 # ugly retro fix for broken version of types
     foreach my $key (keys(%data)) {
@@ -5420,7 +5432,7 @@ sub dateshift {
     foreach my $key (keys(%data)) {
        if ($data{$key.'.type'}=~/^date_(start|end)$/) {
           if ($sec ne '') {
-              next unless ($key =~ /^$env{'request.course.id'}\.\[$sec\]\./);
+              next unless ($key =~ /^$env{'request.course.id'}\.\[$secgrpregex\]\./);
           }
           my $newdate=$data{$key}+$shift;
           $$numchanges ++;
@@ -5840,7 +5852,15 @@ sub date_shift_one {
         text=>"Shifting Dates"});
     my $submit_text = &mt('Shift all dates accordingly');
     if ($sec ne '') {
-        $submit_text = &mt("Shift all dates set explicitly for section '[_1]', accordingly",$sec);
+        my @groups;
+        if ($env{'request.course.groups'} ne '') {
+            @groups = split(/:/,$env{'request.course.groups'});
+        }
+        if (@groups) {
+            $submit_text = &mt("Shift dates set just for your section/group(s), accordingly");
+        } else {
+            $submit_text = &mt("Shift dates set just for your section, accordingly");
+        }
     }
     my $start_page=&Apache::loncommon::start_page('Shift Dates');
     my $breadcrumbs = &Apache::lonhtmlcommon::breadcrumbs('Shift');
@@ -5880,11 +5900,23 @@ sub date_shift_two {
     my $timeshifted=&Apache::lonhtmlcommon::get_date_from_form('timeshifted');
     $r->print('<h2>'.&mt('Shift Dates').'</h2>');
     if ($sec ne '') {
-        $r->print('<p>'.
-                  &mt("Shift all dates set explicitly for section '[_1]', such that [_2] becomes [_3]",
-                      $sec,&Apache::lonlocal::locallocaltime($env{'form.timebase'}),
-                      &Apache::lonlocal::locallocaltime($timeshifted)).
-                  '</p>');
+        my @groups;
+        if ($env{'request.course.groups'} ne '') {
+            @groups = split(/:/,$env{'request.course.groups'});
+        }
+        if (@groups) {
+            $r->print('<p>'.
+                      &mt("Shift dates set just for your section/group(s), such that [_1] becomes [_2]",
+                          &Apache::lonlocal::locallocaltime($env{'form.timebase'}),
+                          &Apache::lonlocal::locallocaltime($timeshifted)).
+                      '</p>');
+        } else {
+            $r->print('<p>'.
+                      &mt("Shift dates set just for your section, such that [_1] becomes [_2]",
+                          &Apache::lonlocal::locallocaltime($env{'form.timebase'}),
+                          &Apache::lonlocal::locallocaltime($timeshifted)).
+                      '</p>');
+        }
     } else {
         $r->print('<p>'.&mt('Shifting all dates such that [_1] becomes [_2]',
                             &Apache::lonlocal::locallocaltime($env{'form.timebase'}),
@@ -6856,6 +6888,12 @@ sub parm_change_log {
         }
         if ($last) { ($folder) = &Apache::lonnet::decode_symb($last); }
     }
+    my $numgroups = 0;
+    my @groups;
+    if ($env{'request.course.groups'} ne '') {
+        @groups = split(/:/,$env{'request.course.groups'});
+        $numgroups = scalar(@groups);
+    }
     foreach my $id (sort {
                 if ($parmlog{$b}{'exe_time'} ne $parmlog{$a}{'exe_time'}) {
                     return $parmlog{$b}{'exe_time'} <=>$parmlog{$a}{'exe_time'}
@@ -6895,7 +6933,8 @@ sub parm_change_log {
             my ($realm,$section,$parmname,$part,$what,$middle,$uname,$udom,$issection,$realmdescription)=
                 &components($changed,$parmlog{$id}{'uname'},$parmlog{$id}{'udom'},$typeflag);
             if ($env{'request.course.sec'} ne '') {
-                next if (($issection ne '') && ($issection ne $env{'request.course.sec'}));
+                next if (($issection ne '') && (!(($issection eq $env{'request.course.sec'}) ||
+                                                  ($numgroups && (grep(/^\Q$issection\E$/,@groups))))));
                 if ($uname ne '') {
                     my $stusection = &Apache::lonnet::getsection($uname,$udom,$env{'request.course.id'});
                     next if (($stusection ne '-1') && ($stusection ne $env{'request.course.sec'}));