We have 5 overs match a d 1 over will be power over which bowling team can take in overs number 2,3 or 4..When the bowling team says it's a power over batting team has to challenge number of runs in that specific over.. If the batting team says 5 runs and they score 5 runs they will get total 10 runs and if they fail to score 5 runs it will be a maiden over.. 
On a no ball free hit of the batsman hits outside the ground it's not out.