The footswitch assignments on the BP8 cannot be changed. However, you can assign your presets to the switches, but not the switches to the presets. To assign the presets to the switches, you would just use the copy feature in the previous Q & A.

For example, if you wanted to have the #1 switch call up the sound in preset #44, and your number #2 switch call up the sound in preset #82, you would copy preset 44 to the "U01" location, and copy preset #82 to the "U02" location. Now when you are in the "U-0" bank, the number one switch will have the sound of 44 at the number 1 switch, and the sound of 82 at the number 2 switch. Although the display will not show the actual preset numbers of 44 or 82, the sounds will be the same because you have copied presets 44 and 82 to new locations.