How to get the property of a dead husband while being in home country?

Dear Madam,

We had a friend who died last year in Dubai. His wife and kids are in India and could not travel due to the daughter's illness. The person had some money in the bank and national bonds.

What is the procedure to get the money?

She cannot travel. Can any other person help her if she gives a power of attorney?

Or his company can help the wife to get the money?

Thank you!