I'd tell them to allow space for the EHS activities during week 47, will prepare the area before requesting permission in advance by using the canteen area between 13-September 25, 2014.
Would like to allow space for EHS activities during the week at 47, will be prepared in advance to request permission to use the cafeteria area during 13 to 25 September 2557.
Inform to allow space for activities during the week EHS 47 by to prepare in advance before the area by area for use during the 13-25 September, 2557 cafeteria