The advice stands, if too have to ask what it is, then it's not for you!
Use of profits refers to dividends? Capitalising means they are added automatically to the capital amount?
If I use an online broker, am I charged for a transaction when the dividends are added to the capital or does DAWM do it automatically and its free?
'Capitalising' is poor translation on the part of DB, what actually happens is that any income generated by the instruments in the fund are reinvested by the fund as opposed to being distributed. Any costs associated with such work is reflected in the TER of the fund.
Your broker should not make any charge for this as he has no work to do when this happens and normally he would not get any information from the fund about such things.
But having said that it is always a good idea to familiarize yourself with all the fees charged by your broker.