Is there any way for a site Manager to remove his employee's historical holiday requests, that were neither authorised or unauthorised (dating back to 2017)?

Hi @Gabrielle Collins-Greene​ 

There is a permission to be able to remove holidays in the templates in HR, however we would not recommend giving this to Managers as it means they could remove authorised holidays.

For more help with permissions in HR, please see the link below-

https://fc.force.com/customer/s/article/WFM-Definitions-of-HR-Permissions

I would suggest that any holidays from past years are removed by HR or the system admin.

Hope this helps

Debbie

Fourth