Samantha Booth wrote:

What do I need to
add to it to make sure the beeswax stays soft so I can use it. I am sure
they added some kind of oil to it?? Maybe wrong but they said it was the
best way to polish old furniture.

As others have remarked, you need a solvent. If you want to try a
traditional recipe you might be interested in the following extract from
the 1946 edition of "Charles Hayward's Carpentry Book". I make no claims
for or against it's merits.

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It should be shredded into a tin, just covered with turpentine, and allowed
to dissolve. The procedure can be quickened by standing the tin in hot
water. Never place it over a flame; it will inevitably flare up. When ready
it should be in the form of a paste of medium consistency, and is applied
either with a brush or a rag. The brush is handy for working into corners
and dealing with carved work.

The wood must be quite dry, and in the event of being stained with an oil
stain, plenty of time should elapse before the wax is applied. It is a good
plan to rub over the surface with a rag to remove any trace of oil. At
least 24 hours should be allowed for the turpentine to evaporate, after
which the whole can be polished with a rubber free from fluff. Probably the
first application will not produce much of a shine, but the advantage of
wax polishing is that it can be repeated at any time.

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--
Mike Clarke