The GAIA-2 allows you to assign up to four parameters to LFO 1 and LFO 2, respectively.
To assign a parameter, shortly press the [ASSIGN] button in the LFO section to select the LFO destination (Assign 1 to 4), and then operate knobs and sliders while holding down the [ASSIGN] button.
*Some parameters cannot be assigned depending on the controllers.
For details on the assignable parameters, see "Panel parameters assignment list" in the GAIA-2 Reference Manual.