Dear Pix,
yoy could apply this feature ( HO margin ) if you have 2 cells cover the same area with diffirent levels, i mean one cell is more strength than the onther, but in my case the 2 cells cover that rea in same level.
an example: if i have site cover a staduim, and i wanna put Mobile BTS in that staduim at important match to load off traffics from that site.
knowing that the sites and the MBTS cover staduim in same level, and the 2 sites are 1800 and layer 2.