Power of Attorney An elderly person executed a Power of Attorney designating…

Power of Attorney
An elderly person executed a Power of Attorney designating Alternate A. Additionally, a separate Medical Advance Directive and Power of Attorney has been executed naming Alternate B for medical emergencies.

In the case of a medical emergency, if Alternate A differs with Alternate B, would the medical caretakers accept Alternate B as the foremost authority to carry through and make decisions for medical purposes, or would Alternate A’s authority supercede Alternate B?

Which Legal Form Do I Need?

Which Legal Form Do I Need?
I’m not sure which form may be most appropiate through ”FindLegalForms.com”
Heres my situation:
I would like my family sign perhaps one of the forms from the website so I can sleep better at night.
In a nutshell:
Dad passed away, left an unfair trust with greedy trustee which gave undue influence. (can’t proove it)
86 yr. old mother with sound mind agrees with me and is willing to counter weight my short comings from my dad’s trust into her trust/will.
Would like a certain form for my siblings to sign (2 bad apples out of eight children) so they won’t manipulate my mother after we agree on a compensation. I know a trust is solid but somthing I may need in the future if I need to contest it from further undue influence.
What forms I found that might be relavent are:
Indemnity Agreement
General Affidavit
Promissory
& General Declaration
Thanks in advance!