Wan balance + merge

Hi all
i have ROS 5.20 with 2 adsl connections 8mb download / 1mb upload speed for each
load balancing is configured for the network so some users uses first line with open dns & others uses the second line with google dns everything works fine but max download or upload for any one including admin is 8/1

now I need an on-demand merge configuration so I can grant some IPs a full 2 lines speed (16 mb download & 2 mb upload) & disable this when not used, better that merge & load balance works together but not necessary

is this possible??? if yes please provide a code or command line that I can use or a link for lesson to follow
thanks in advance

That is not possible, unfortunately.

OK lets try it the hard way
I can rebuild the server & import all configuration except connection settings then configure connection merging & lastly backup the entire system
if I need load balance operation will use config 1
if I need merge operation will use config 2
as you know restoring a backup & reboot the server takes only as low as 20-30 seconds

could this work???