You can add a task to multiple users at the same time and also set the start and end date of the period this task will be worked on.
First, you need to add users to the plan. If you don’t know how to do this please follow the guide here: Add users
After a user has been added to the plan you can hover over a table cell for the desired date. A highlight will show up and it will be possible to click it.
After you click it a modal will show up.
Here you can select users from the ones you added to the plan. By default, the user whose cell you clicked will be selected.
By default there is no issue selected however, you can immediately start typing the issue key or some text like a summary.
The last fields are the start and end dates. By default, both are set to the day of the cell you clicked.
After you selected desired values click Add Issue button at the bottom and your issue will show up in the plan.
After you finish working with the plan, make sure to save the changes. At the top of the page, next to the Plan’s name you will see a notification whether there are any unsaved changes.
If you see the label, simply click Save Plan. You will also be notified that the changes are not saved in a pop-up when you try to exit the page.