Sometimes you need to take an existing shift, and assign some of it to one or more users. This is called "splitting a shift".
click on the shift on the roster you want to split.
click on the 3 dots next to the users name (the "context menu") - you will see many actions you can take with this users' assignment. Choose "split shift".
3. A dialog will appear which will allow you to pick the time that the shift is split, the other person who is doing part of the shift, and which does the start and end of the shift.
By clicking on the Select User, you will be able to choose from a list of users as shown below:
The time can be anytime between the start and the end of this shift.
4. Once you've chosen the other user and the time, press "save". both users will receive an email notification.
If you need to split a shift into more than 2 parts, do the first split, then split one of the newly created assignments again.