I commend you for your good will and consideration. May God bless you.

Now coming specifically to the issue you have raised: It is sufficient for this purpose to cordon off the specific area,  if it all possible, by setting up a barrier (permanent or temporary) so that people can be expected to respect the same, and in order to discourage them from walking in front of the worshippers while they are at it. If, however, setting up such barriers are problematic, then you may simply place prayer rugs to indicate the same.