When the slotByElement method is used for multiple elements this could lead to performance issues in Scheduler.
For example, the difference in the performance can be observed in the Dojo examples linked below when loading the Scheduler and when changing the selected resources:

Dojo with 2023.1.314 - https://dojo.telerik.com/@NeliKondova/UJOcEJoC

Dojo with 2023.1.425 - https://dojo.telerik.com/@NeliKondova/UHisivuC

The issue occurs starting with the 2023 R1 SP1 release and could be due to the following fix - #7260

When the dates for the current view are changed in Scheduler, the screenreaders do not read the new date.

Reproduction of the problem

1. Go to Keyboard Navigation Demo
2. Go to the arrow buttons in the toolbar and click 'Next' to change the date
3. Date changes to "Sunday, June 16, 2013 - ..."

Current behavior
The screenreaders do not inform the user that the date has been changed.

Expected/desired behavior
The user should be informed that the date has been changed.

Environment
Kendo UI version: 2021.2.616
Browser: [all ]

Hello

Is it possible to group events by 2 different fields in a different view ?

Like :

Custom View 1 - Grouped by Room

Custom View 2 - Grouped by Attendee

Thank you

When Scheduler data is loading, while waiting for the server response, there is no loading indicator rendered for the Agenda view. For example, such an indicator is displayed when loading the data in Day, Month, Timeline views. I would like to have the loading indicator in the Agenda view as well.

I have a need to create an event that will indicate a resources availability. This only needs to be a thin coloured block. Actual events will then be created along side the 'Availability' block. Basically we have the ability to create an event template. Need to be able to create two have assign the correct template based on what type of event it is. Also need the availability event to be rendered first so that it is always to the left on vertical views and at the top in horizontal views.

can we show Time vertically in Timeline view 

When editing a recurring event it can occur than the POST call (the one that creates the exception) finishes well, but the PUT one fails. In this case the exception is created but the new event is not created, causing that the final user thinks that the event disappeared (and causing an inconsistency in database).
It would be great if the scheduler could be configured to make one single call with the data of the master event and the new one in the same post, atomicly.
Moreover, if it is needed to perform remote validation when resizing or moving one event of a serie (the same scenario as the previous one) it would be much more easier to do it with that single call model.

Currently, the moveEnd handler contains e.slot and e.resources objects to provide information about the slot where the event was dropped. Please add the corresponding fields to the moveStart handler to identify where the move began.

To select multiple events from different groups in kendo ui scheduler with angular js, but currently it only allows multiple events selection in same group.

In date pickers in scheduler and occurence editor to easily be configured to show week numbers.

When using the Scheduler with multiple resources, the day, week and work week views become unresponsive as a result of the view loading all of the resources.

The following dojo demonstrates this http://dojo.telerik.com/EvEROL

It would be good if the Scheduler could be configured to allow virtual scrolling so that resources can be loaded at the point of scrolling down the view.

An example of why this might be required is:
- You have two lists of resources, one for projects and one for staff
- You would like to group the events by resource and see which member of staff they are assigned to and to which job they belong to.
- This would allow you to easily re-assign events to different members of staff or to different projects by dragging and dropping.

Currently events >24h are automatically shown in the all day area. This is confusing if the event starts or ends somewhere during the day. E.g. it starts at 5 p.m. on tuesday and ends on 11 a.m. on thursday.

Noone knows when the resource is really available if the event is shown as all day from tuesday to thursday.

There should be an option to turn that behaviour off and show such events as regular events.

Maybe the only thing needing change is this line in _renderEvents:
var isMultiDayEvent = event.isAllDay || event.end.getTime() - event.start.getTime() >= MS_PER_DAY;

The user might cancel moving an element by pressing the ESC key, but there is currently no event raised by the scheduler when this happens.

The user should be able to select multiple events at the same time by pressing the control key. At the moment this can not be done.
The following example shows the issue: http://dojo.telerik.com/udItE -> It is not possible to select events from Meeting Room 101 and Meeting Room 201 at the same time.

This feature would make it possible to swap events from different groups. For example, swap the meeting rooms of two events.

please provide us the scheduler with group by date not by resource

Resources could be working for an organization or multiple organizations (i.e. doctor rounding multiple hospitals). It would help to have another level or multiple levels on top of Resources so they can be filtered. 
i.e. I can select Hospital A and then select all the doctors (resources) under Hospital A and look at all schedules for that resource.

It would be great to be able to customize the scheduler's toolbar, either by specify custom buttons and actions through 'toolbar' option or by providing a custom template.

Autoscroll when dragging an object from outside the scheduler (e.a. from a grid) is already available and works fine. It would be really nice to have this vert same functionality also available while dragging an event that's already in the scheduler...

The scheduler in week-view and day-view is always starting at 12 am. We would like to request a simple function, which allows to let the calendar scroll to the desired hour! (Let's say it is 3PM and the user would see automatically see his appointments beyond 3PM, because that is what matters and not staring at 12AM )
Nobody want to look at a day view, which starts at 12am. There are in some forums suggestions mentioned how to potentially do it, but id does not work in all screen sizes without terribly breaking it! So please please add this small, but valuable feature...

The multi drag and drop feature that existed in the Silverlight ScheduleView has disappeared in Kendo UI. 

Is it possible to add support of dragging and dropping multiple events at the same time, allowing to edit the time and date of multiple events with the same time difference (e.g. +2 hours and - 1 day)?