This resource gives guidance on how to copy your 8/2 live session Template Course into another shell and then change that course into a 16/2 live session course.
Step by Step Guide
Step 1: Select the course: 8 Module/2 Live Sessions Per Module Hyflex Undergrad and Grad
Step 2: Go to Settings  and select Copy this Course 
Step 3: Choose All Content  and click on Create Course 
Step 4: Once it’s done processing, click on the course you just copied
Step 5: Go to the Modules page and scroll to Module 1 (Insert dates here – Monday to Sunday)
Note: You will need to expand from 2 meetings per module to 4 meetings per module.
Step 6: Go the Live Session 1 assignment and click on the snowman dots . Choose Duplicate 
Repeat this step for the Live Session 2 assignments as well.