Q. Can we combine two or more intentions in the qurbani of Eid ul adha. For example, one share for aqeeqa and the one share for the qurbani? And one share for a dumm of last year’s Hajj?
A. The animal that has 7 shares within it can be divided so that a shareholder can buy multiple shares, allocate a share towards his/her qurbani, and other shares towards an aqeeqa for his/her daughter or two shares for a son, etc.
As far as Dumm (penalty) for Hajj is concerned, there are certain types of Dumm that must be done within the vicinity of the Haram, and its meat divided over there. So the last part of your question is vague as to the type of Dumm you are requesting information about.
Allah certainly knows best.