If your family is on Visit Visa you cannot check their Medical results on MOI as Medical results shows only for Work Visa . And also for visit visa you don't have to do the blood group , it is only required upon residence Visa approval ....

After three days to a week having done medical for Visit visa holders just go to immigration to do extension ......

If you had joined the Metrash service then you could have received sms in this regard .........

I hope it is clear to you .....