To have a loadless timer running during your octofecta runs for HP1, HP2, HP3, HP7.1 and HP7.2, you'll have to add a scriptable autosplitter into your livesplit layout for HP7.1 and HP7.2 (for HP1-3 you can just activate it directly on livesplit by clicking on "Activate" after typing "Harry Potter Multiruns" in "Game Name")

#To add the scriptable auto splitter

Right click on Livesplit Edit layout + Control Scriptable Auto Splitter Then go into your layout settings, go on the scriptable autosplitter and browse for the script

Link for the script: https://drive.google.com/file/d/1AL5zZmvmom-tVXv2HTKzcDOaqmCVx6uq/view