I would like to add the name of the reverend who christened a person, who blessed the wedding ceremony and minister of funeral meeting.
More detailed: a customizable label.
In my opinion 'pastor' is not the right term.
What is the best I can do? Add a question on github?
Too many options here. A person who has officiated at a baptism, marriage or funeral could conceivably be a clergyman (minister, priest, chaplain, etc.,) public official, or any other person.
For example, in the 'Latin Church:' "If the ordinary minister is absent or impeded, a catechist or some other person deputed to this office by the local Ordinary, may lawfully confer baptism; indeed, in a case of necessity, any person who has the requisite intention may do so (canon 861 §2), even a non-Catholic or indeed a non-Christian.
Certainly no "customizable" label. How's that for a non-answer?
"Failure is an amazing teacher." (L'échec est un professeur extraordinaire.)
TEXT should be your friend when it comes to this type of information.
As Greg indicated, add a SOURce to your database that contain all of the basic information about the source document, if you want to expose specifics about the event that was written in the source, add a TEXT tag with the words used in the source.
For cases were the source document has information about multiple events/facts you can also use the DATA.TEXT tag of the Source_Citation to present detailed text from the source that relates to the specific event/fact.
This is a case were using what GEDCOM already incorporates in its design before looking to customize is the best approach.
If the priest’s name you want to store is associate with an specific event/fact then make sure the NOTE you use is associated with that event, the same would be true if you used an _ASSO tag to associate the event to the priest.
Personally, unless the priest is a family member, I would only create the NOTE, and NOT use the _ASSO tag.