diff --git a/calendar/inc/class.calendar_uilist.inc.php b/calendar/inc/class.calendar_uilist.inc.php
index e20c759e42..6e72fc4cc1 100644
--- a/calendar/inc/class.calendar_uilist.inc.php
+++ b/calendar/inc/class.calendar_uilist.inc.php
@@ -450,6 +450,7 @@ class calendar_uilist extends calendar_ui
 				{
 					$icons = calendar_uiviews::integration_get_icons($app,$app_id,$event);
 				}
+				$event['icons'] = $icons;
 			}
 			else
 			{
diff --git a/calendar/js/et2_widget_event.js b/calendar/js/et2_widget_event.js
index 1f046bbf1f..a5ebe1b7aa 100644
--- a/calendar/js/et2_widget_event.js
+++ b/calendar/js/et2_widget_event.js
@@ -494,10 +494,13 @@ var et2_calendar_event = /** @class */ (function (_super) {
         var icons = [];
         if (this.options.value.is_private) {
             // Hide everything
-            icons.push('<img src="' + this.egw().image('private', 'calendar') + '"/>');
+            icons.push('<img src="' + this.egw().image('private', 'calendar') + '" title="' + this.egw().lang('private event') + '"/>');
         }
         else {
-            if (this.options.value.app !== 'calendar') {
+            if (this.options.value.icons) {
+                jQuery.extend(icons, this.options.value.icons);
+            }
+            else if (this.options.value.app !== 'calendar') {
                 var app_icon = "" + (egw.link_get_registry(this.options.value.app, 'icon') || (this.options.value.app + '/navbar'));
                 icons.push('<img src="' + this.egw().image(app_icon) + '" title="' + this.egw().lang(this.options.value.app) + '"/>');
             }
@@ -506,14 +509,14 @@ var et2_calendar_event = /** @class */ (function (_super) {
             }
             if (this.options.value.public == '0') {
                 // Show private flag
-                icons.push('<img src="' + this.egw().image('private', 'calendar') + '"/>');
+                icons.push('<img src="' + this.egw().image('private', 'calendar') + '" title="' + this.egw().lang('private event') + '"/>');
             }
             if (this.options.value['recur_type']) {
                 icons.push('<img src="' + this.egw().image('recur', 'calendar') + '" title="' + this.egw().lang('recurring event') + '"/>');
             }
             // icons for single user, multiple users or group(s) and resources
-            var single = '<img src="' + this.egw().image('single', 'calendar') + '" title="' + '"/>';
-            var multiple = '<img src="' + this.egw().image('users', 'calendar') + '" title="' + '"/>';
+            var single = '<img src="' + this.egw().image('single', 'calendar') + '" title="' + this.egw().lang("single participant") + '"/>';
+            var multiple = '<img src="' + this.egw().image('users', 'calendar') + '" title="' + this.egw().lang("multiple participants") + '"/>';
             for (var uid in this.options.value['participants']) {
                 // @ts-ignore
                 if (Object.keys(this.options.value.participants).length == 1 && !isNaN(uid)) {
diff --git a/calendar/js/et2_widget_event.ts b/calendar/js/et2_widget_event.ts
index 0ae5a62115..6daff1edb9 100644
--- a/calendar/js/et2_widget_event.ts
+++ b/calendar/js/et2_widget_event.ts
@@ -627,11 +627,15 @@ export class et2_calendar_event extends et2_valueWidget implements et2_IDetached
 		if(this.options.value.is_private)
 		{
 			// Hide everything
-			icons.push('<img src="'+this.egw().image('private','calendar')+'"/>');
+			icons.push('<img src="'+this.egw().image('private','calendar')+'" title="'+this.egw().lang('private event')+'"/>');
 		}
 		else
 		{
-			if(this.options.value.app !== 'calendar')
+			if(this.options.value.icons)
+			{
+				jQuery.extend(icons, this.options.value.icons);
+			}
+			else if(this.options.value.app !== 'calendar')
 			{
 				let app_icon = ""+(egw.link_get_registry(this.options.value.app,'icon') || (this.options.value.app + '/navbar'));
 				icons.push('<img src="'+this.egw().image(app_icon)+'" title="'+this.egw().lang(this.options.value.app)+'"/>');
@@ -643,15 +647,15 @@ export class et2_calendar_event extends et2_valueWidget implements et2_IDetached
 			if(this.options.value.public == '0')
 			{
 				// Show private flag
-				icons.push('<img src="'+this.egw().image('private','calendar')+'"/>');
+				icons.push('<img src="'+this.egw().image('private','calendar')+'" title="'+this.egw().lang('private event')+'"/>');
 			}
 			if(this.options.value['recur_type'])
 			{
 				icons.push('<img src="'+this.egw().image('recur','calendar')+'" title="'+this.egw().lang('recurring event')+'"/>');
 			}
 			// icons for single user, multiple users or group(s) and resources
-			const single = '<img src="' + this.egw().image('single', 'calendar') + '" title="' + '"/>';
-			const multiple = '<img src="' + this.egw().image('users', 'calendar') + '" title="' + '"/>';
+			const single = '<img src="' + this.egw().image('single', 'calendar') + '" title="' + this.egw().lang("single participant") + '"/>';
+			const multiple = '<img src="' + this.egw().image('users', 'calendar') + '" title="' + this.egw().lang("multiple participants") + '"/>';
 			for(const uid in this.options.value['participants'])
 			{
 				// @ts-ignore
diff --git a/calendar/lang/egw_en.lang b/calendar/lang/egw_en.lang
index c035c97465..2858956360 100644
--- a/calendar/lang/egw_en.lang
+++ b/calendar/lang/egw_en.lang
@@ -370,6 +370,7 @@ monthly	calendar	en	Monthly
 monthly (by date)	calendar	en	Monthly -by date
 monthly (by day)	calendar	en	Monthly -by day
 monthview	calendar	en	Month view
+multiple participants	calendar	en	Multiple participants
 multiple week view	calendar	en	Multiple week view
 name of current user, all other contact fields are valid too	calendar	en	Name of current user, all other contact fields are valid too
 name of the day of the week (ex: monday)	calendar	en	Name of the day of the week (ex: Monday)
@@ -450,6 +451,7 @@ prevent deleting of entries	admin	en	Prevent deleting of entries
 previous	calendar	en	Previous
 private and global public	calendar	en	Private and global public
 private and group public	calendar	en	Private and group public
+private event	calendar	en	Private event
 private only	calendar	en	Private only
 quantity	calendar	en	Quantity
 quick add	calendar	en	Quick add
@@ -545,6 +547,7 @@ show this month	calendar	en	Show this month
 show this week	calendar	en	Show this week
 show year and age	calendar	en	Show year and age
 single event	calendar	en	Single event
+single participant	calendar	en	Single participant
 specify where url of the day links to	calendar	en	Specify where URL of the day links to
 start	calendar	en	Start
 start date/time	calendar	en	Start date / time