Salomon binding? Which model? and year? (year probably won't matter)
It probably has a tab with a several lines etched into it? If this is the case, with no boot in the binding, take a standard screw driver (about 1/4 in. wide i think), slide it under the tab as far as it will go ( you don't need to push hard) and then lift the handle up (sometimes you have to giv'r a little to get some movement, or twist the screwdriver handle). The binding will want to slide forward quickly sometimes. no big deal. Just play with different positions.
The final appearence should be ( depending on the which model) should be the housing of the binding (probably plastic) should be flush with anywhere within those etch marks on the tab.
The model makes a difference but the adjustments are for your "forward pressure."