I'm hoping to modify the McDonald Institute Monographs style. I've watched a number of YouTube videos but maybe it's my age but I can't wrap my head around exactly how to do it.

All I need to change is to drop the p. after the year and add a : after the year IF there is a page number in the in-text citation.

Can any kind soul point me to the right way or perhaps share a modified .CSL file?

Thank you

Joel

These are the requirements for the in-text citation:
https://s3.amazonaws.com/zotero.org/images/forums/u19208235/ajrjha8zwof2mcop6vcx.png

And this is what it's currently doing:
https://s3.amazonaws.com/zotero.org/images/forums/u19208235/ctpfvld4uc6zcegsyd5l.png