Ongoing implementation of MBS-3774 as pull request #2219 submitted by y-young allows to set date period (begin date, end date, ended flag) for an URL relationship directly from the linked entity's editing page.

Furthermore, recent implementation of MBS-11680 (currently deployed in beta) groups relationships to the same URL together in the linked entity's editing page.

The date period of different relationships may be different when the same webpage offers new content, but it is more often for the same URL.
So it would be handy to allow optionally setting the date period in one go for all relationships to the same URL.