Our Golds seem to be capable of seeing to themselves, the options there are just to make introductions (which honestly, if they need introductions after 5 weeks...?).
In the case of Max, we wouldn't necessarily be making an introduction. Instead, we'd be giving him a chance to kick-start his education. From Week 2:
"It is said that dwarves are among the greatest of craftsman. As such, I intend to learn from them, and aiding them in retaking their Karak will be the coin with which I purchase an education."
If we take no action on this matter, Max won't be able to actually learn from the dwarf smiths unless and until he can earn his own Dwarf Rep & Favors during the retaking of K8P. He is providing some aid to the dwarfs right now, but it's an equal exchange of services; keeping forges lit for being provided with housing/transportation:
You find the first of the Gold Order Wizards is named Maximilian and is nestled inside one of the dwarven carts; apparently he's bartered transportation for himself in exchange for 'fuelling' the portable forges the dwarves have brought with them.
Unless there are hidden rolls going on behind the QM screen, it may be a long while before Max can actually start his education. Mathilde's available actions may allow him to start his education immediately:
[ ] Introduce him to the dwarven smiths so he can try to convince them to teach him.
I see this as similar to Matty delivering Belegar's messages for reinforcements in Week 1; there, Mathilde wasn't trying to convince anyone to aid the Throng herself, but rather she enabled Belegar to make re-rolls for reinforcements. Here, this action would likely be Matty using her high Dwarf Reputation to get Max an opportunity to start learning from the dwarf smiths, even with little to no Reputation of his own; Max would be rolling, rather than Mathilde.
[ ] Ask the smiths to teach him as a favour to you (-2 favours)
This action should be an auto-success for getting Max started on his smithing education right now; when Mathilde used Dwarf Favors to set up the Niter Factory with dwarf expertise back in Turn 15, it was done without any rolls. There
could have been a roll involved there, and was simply kept hidden by the QM, but using Dwarf Favors here probably would be more likely to succeed than the former option.
As for Johann, it is less clear as to what taking an action there would result in. From Week 2:
When you leave Maximilian and search for the other Gold Wizard, you find him among the artillery crews. Johann is his name, and to your surprise he's already begun to endear himself to the usually touchy dwarves; those of the Black and Grey Mountains are usually less closed-off than those from the dwarf heartlands of the World's Edge Mountains, but it's still quite the achievement.
From Week 4:
"I like dwarves." You give him a flat look, and he smiles. "That truly is the sole reason. If I earn enough favour during this expedition that they give me another secret or two to take home of their own free will, then so be it, but I'm not going to endangering the oldest and truest alliance we have to learn how to make slightly better cannon."
Ignoring the 'keep tabs on Johann' action, that leaves:
[ ] Help him find a place with the dwarf artillery crews so that he can supplement their abilities in combat.
It sounds like Johann's already making inroads with the dwarf artillery crews himself, such that our intervention may be less useful for him than it may be for another Journeymanling. Taking the action may ensure that Johann has a more concrete position within the artillery rather than just being a loose, friendly presence there. That in turn may mean he'll end up spending more actions aiding the artillery, and be less likely to wander off to pick over Skaven tech. Johann'll still certainly investigate any Skaven salvage, but hopefully the responsibilities assigned to him would cut down on risky or inconvenient actions on his part.