Possible reason behind your issue is, you might be checking for Roll-out option on Live Copy page. Instead you'll have to check for that option on Blueprint page.
Following are the steps to see the Roll-out option:
1) Create blueprint from http://localhost:4502/miscadmin#/etc/blueprints
2) Once blueprint is created, open it and click on "Edit" option and enter the source path as shown in the below screen shot.
3) Now create a new Live Copy by entering title, name and select Live Copy from and from Sync Config window, select Rollout Configs as shown in the below screen shots.
4) Now, go to the source path (which was entered in the step-2) and right click on it. You'll see Roll-out option enabled as shown in the below screen shot.
Hope this helps!