Galaxy S5 :: Sending Text To Multiple Contacts?

I have just updated my s5 to the latest android version 5.0.2 ... When I go into messages and click the green circle in bottom right hand corner and the next screen is where you enter recipients and your message, i start by typing the 1st person i wish to add and his name comes up and i add him to the recipient list thats all fine but i cant find a button or anything to add another contact?? the only way is to delete the number of the recipient that pops up under his name and start over again! i have never come across this in any phone in the last 5 years and even this phone before the update?