Any recurring holiday, which belongs to a linked holidays set, can be linked to one of the recurring holidays of either of these linked sets.
To create, view or modify this link, right click on any holiday and select the Link to Ancestor menu option:
Then, select the recruiting holiday to which you want to link the currently selected recurring holiday.
This link is then used by the holidays synchronization of the holidays that you have copied, after the the world holidays database has been updated.
See also: linking holidays sets.
Topic 180350, last updated on 18-Apr-2020