Any unit in your army list with a price for additional models (i.e. most unit entries except ’Single model’ and EoS Auxiliary units) may take the following upgrade:
Fresh Meat 35 pts
The unit gains Exclusive, changes its maximum Points Cost to 800 points, and increases its maximum Unit Size by +20%, rounding fractions up.
E.g. a unit entry with Unit Size ’10-24 models’ increases its maximum by +4.8 models to ’10-29 models’