Please do explain what you want to do and show us what you already tried to do to solve your problem , that'll help us help you solve the problem
for ex : you choose new project and select : Template-RTS.capx
you can see the tanks move through each other
for ex we have a 2 tank : tank1 and tank2
we click on x,y
i want when tank2 in way of tank1 then tank1 find another patch to go to x,y we clicked
or tank2 move a little then tank 2 go to x,y
for better ex see this img :
imageshack.com/a/img191/1381/a3nt.png