How do can create Split Baseline?

What do you mean by a split baseline? Baselines are a copy of task data when the baseline is saved - if the task was split - the baseline will be split.

Firt, thanks JolieS anser. This's my file MPP: Learn MPP.zip
In this file MPP, i mark yellow at ID 24 ( Road Furniture)
I use Project 2010.
Thanks.

I've looked at your project file and specifically at task 24 and I'm afraid I still don't know what you mean by split baseline.

Task 24 is baselined, although I am not sure why you have a summary task as well as the subtask. You do not have any resources assigned to the task and that is a usual way of splitting a task - edit the timescaled work in the Task Usage view and enter zeros in the work field. But, as you don't have assigned resources you can't do that.

Can you please explain in more detail what you need?

Sorry. This is file download from internet to learn Project. I studying but can't create Baseline split task:
(If you open file by Project 2013 is not see Baseline Split. Only in Project 2010 is Ok.)
Thanks!

I am opening the file in Project 2010. Again - what do you mean by a baseline split? Type into your next message the text you are seeing in the course you are trying to take and I'll try to be of help.

Thank you Julies. I understand baseline splits. But I don't create split task have 1 day work.
help me. For example guide.

I'm sorry. I still do not understand what you mean.