Gateway Weight(priority)

[sahan]

hi everybody
i have setup pfsense with multiwan load balanced,so i want to know, how to setup
gateway priority
i have ,
#.fibre connection
#.4G LTE connection
In these connections i want give more priority to the 4G LTE connection because of the more data quota. In fibre connection ,i have little bit of data quota ,so how to assign weight values,thank you!