First, you can create a new activity schedule block using the following steps:
  1. Navigate to Core > School > Blocks.
  2. Click on + Add Block.
  3. Select Group Type: Activities.
  4. Enter a name for the block.
  5. Click Save & Close.
Next, you can create a new activity schedule set using the steps found here: How do I create a new Schedule Set?

Finally, you can attach activity sections to the block you created using the following steps:
  1. Navigate to onCampus > Procedure > Activity > Set Section Information.
  2. Select Year: 2016-2017.
  3. Click on -Not Set- in the Block column next to the appropriate activity.
  4. Select the appropriate schedule block for this activity.