There is usually no need for you to appoint someone to act on your behalf. If you do, remember you will have to pay their fees yourself. Insurance companies usually want to see evidence of ownership and value of property which has been lost or damaged. It is important to keep, if possible, receipts and professional valuations. If you do not have these, ask the insurance company what other evidence they will accept.
Many insurance companies provide telephone helplines for policyholders facing an emergency.
They can give you the names of good tradesmen for emergency repairs and, of course, give detailed advice to those having to make a claim. Check whether this applies. You may qualify for a discount from the premium if you already have good security. Modern insurance policies are easy to read. Then clear any particular points with your insurance company or insurance adviser.