The testator can change their executor as often as they wish without any sort of notification. Once the estate has been opened and the court has appointed someone, they cannot be changed without notification. The Letters of Authorization have to be revoked and new ones issued.
Can an executor of will change beneficiaries before or after death
No, the executor is responsible for carrying out the decedent's wishes as spelled out in the will, but the will itself cannot be changed.
If the will is changed, there is no requirement. If the court has already appointed them, then yes, they must be notified that their letter of authorization is no longer valid.
You can be appointed executor without knowing it. There is no requirement to share the contents of the will before death.
No, the only person who can change a will is the person who wrote it, or perhaps a court that is convinced there is some obvious mistake that needs to be "changed" to accurately reflect the testator's intent.
They certainly may not sell it before her death! They have no power to do anything.
You can be asked to serve as both, but not at the same time. And executor cannot do anything before death and a power of attorney expires on death.
No. Not unless it is provided by the testator.
The death of an executor does not affect the will. The will is followed by the executor who reports to the court. If the grandmother left the children out of the will, they will not be entitled to anything.
Yes.
They have no control over things that happened before death. They may be able to bring some of it back into the estate.
They do not have that right. The executor is responsible for the property and can allow, or not allow, access to the premises. The executor has to inventory the property of the estate and value it before distributions can be made.