In fact, the equivalent page in the current 3.5 for changing the sequence type (e.g. to “number”) is significantly improved in terms of your question David, as it now includes a tip about changing the default sequence type in Engraving Options. It is now my “standard practice” to document how to change items individually, if possible, and then direct users to the equivalent default setting (in the Pro manual, where that setting isn’t accessible for Elements/SE users). Unfortunately that tip was missing in the v1 manual, but has since been added in this case. Likewise added to the 3.5 manual is a hint/pointer towards changing rehearsal mark indexes or sequence types at the end of the task for inputting them.
I’ve made a note to double-check what metadata exists in that topic, in case some other key words might make it easier to find.
Additionally, I’d recommend going to the “introductory” topic for a notation if you’re not sure what to look for - admittedly some of the oldest topics of this type aren’t always as helpful, but for some time now I’ve made a point of introducing/mentioning some key bits of functionality and operations in those topics. For rehearsal marks, the hint about changing the sequence type to numbers or bar numbers is there (as a way of pairing up the terminology used with the desired end results in explicit terms, to try to help people who wouldn’t immediately think “sequence type” or other similar, “official” terms).