How do you instigate the 25th Amendment for a church minister?

With the current... somewhat erratic... bloke in the White House, there's regular discussion about instigating the 25th Amendment.

In fact, there was regular chatter about the 25th concerning his predecessor (perhaps the USA should select someone NOT IN THEIR LATE 70's!).

Of course, the 25th Amendment outlines the scenarios which unfold to unseat and replace the President due to unfitness - be they physical or mental. 

But, do churches have similar guardrails?

With the advancing age of many ministers? Should they?

For the highest position within Catholicism, there is no real ability to remove him forcibly. He's, in the vast majority of cases, in the job for life - for better or worse.

Outside of that, it gets far messier.

If your church has a hierarchical system, then there may be some ability for a regional overseer to remove a minister who is unfit.

But, surely this is like sending the fire brigade once the house to well alight.

And, what of those who worship within independent or less-structured denominations?

Who's responsibility is it to tap the minister on the shoulder then?

As well-meaning as a minister agent may be, who will put them (and the congregation) our of their misery? 

While the Anglican church has a policy in place for the minimum requirements which a minister must meet, this only works effectively if someone is travelling about to evaluate if standards are being met or a concern is raised.

So, does the duty just defer back to the local leadership of a church?

Do they, having watched the physical or cognitive regression of their minister, have an understood and stated ability to eventually institute an ecclesiastical 25th Amendment?

Would a lot of lay-leadership within the church be aware - or comfortable - with the power (and responsibility) that they wield?