Which preposition to use with rendezvousing

of Occurrences 1%

The doors at this end open into an inner vestibule, which is well screened from the main building, and may be used for class purposes, the rendezvousing of christening parties, or the halting plate of sinners, who go late to church, and hesitate until they get desperate or highly virtuous before proceeding further.

Which preposition to use with  rendezvousing