I still remember I very like the experience of Google Calendar years ago, where I can drag Todo item from sidebar to agenda, to arrange the time to do them. So I take a few hour to add this to the caneldar plugin:
after drag from side bar:
Demo: TW Calendar — Tiddlywiki Calendar Widget and Page Layout displaying tiddlers on calendar and agenda, based on created, modified, startDate and endDate fields on tiddlers. (Don’t drag plugin from this site, use CPL to install it, otherwise you will miss some dependency)
This task list comes from GitHub - tiddly-gittly/intention-tower-knowledge-graph: ITKG is a knowledge and task management framework for tiddlywiki. · GitHub plugin, it is a tw-native project manager build for myself (tw-native means it use filter expression to aggregate task tiddlers). But you don’t need to install it, you can add your own sidebar:
You can add tiddlers with tag $:/tags/EventCalendarSideBarSegment to appear on the sidebar (or install community plugins that have such tiddlers).
Draggable content can be added to the entry like this: <$draggable data-event='{ "duration": "01:00" }' data-tags="Tags">