In grid interface you should adapt the arrows next to 30 You can adapt it permanently through the options menu - general tab In excel you should change the value at cell q2
You just stick the value in Q2 in seconds from 0.2 to a max of 1000(I think) . The other special Q2 triggers have a minus sign in front so BA can distinguish between say -8 delete a market and 8 can refresh to 8 seconds.