First of all Threads of “i am unable to xyz” are not very helpful and people wont really help you because it is low effort and way too vague and does not motivate people to help you.
Read this first before doing anything:
What have you tried? What Errors do you encounter? Why are you unable?
I Assume you created one via the “Helpers” Section?
If yes:
- Go to the Helpers section: ip.of.your.homeassistant:8123/config/helpers (not developer tools, because it seems to not show you all you want)
- Identify your Schedule
- Select your Schedule (click on it) it will show a history stats window of the entity
- Select the cog on top right corner of the History Stat-Window of the schedule that you have opened. It will now show you a “calendar”. Change the schedule on how you want to.
If no:
ask a better question