Better translation needed

There was an article published in Morgenbladet (Kristiania) on 5 July 1904, page 5 column 1 that had this paragraph, followed by a list of names, broken out by cemetery and roughly arranged chronologically within each cemetery. I tried Google translate, which see below but I'm still not understanding what's happening. Can someone Norwegian fluent explain what's going on with the burials of these people named? "Bekjendtgjørelse I henhold til kirkegaardsreglementets §§ 17-19 varsles herved Fæsterne af nedennævnte gravsteder—eller I tilfæld den eller de personer, some efter § 17 maatte være berettigede til at fornye fæstet—om inden en Frist at 6 – sex—uger fra dato at godtgjøre sin ret til fornyelse og betale afgiften, idet gravstederne I modsat fald hjemfalder gravlunden til fri Forfoining." Google translate: "proclamation According to Sections 17-19 of the Church Regulations, the enclosures of the following burial grounds are hereby notified — or in the case of the person or persons who, according to § 17, must be entitled to renew the attachment — whether within the time limit six to six weeks from that date. its right to renewal and to pay the tax, as the burial grounds otherwise fail the graveyard for free refinement." My relatives, a 2 great grand uncle Lars Olsen and his widow Cecilie Olsen are mentioned. He did die 17 March 1883 In Kristiania, so it appears this is in concern of his burial at Sofienberg cemetery since the date 17 Mar 1903 appears in his / her listing. I would just like more clarity about the announcement.