ok thanks. I go and find out what is minimum for dbs zero remit.
yes i have more than 10 parties to transfer merit but I don't believe in using the words 合家。 If you really love a person, you want to do one undivided merit specifically for each person with utmost sincerity. 合家 is very lazy method and lacking in sincerity.
Donate just one brick is a bit too sitngy.