# Dedicated grid file (Main window → Primary menu)

For models, the grid  may be contained in another dedicated file (like SYMPHONIE and FES). To plot the output of the BOBIBE simulation, in directories "BOBIBE_hourly" and "BOBIBE_grid":
1. Primary menu → [grid file] → check the box
“use as external grid”.
2. Then, proceed as usual.

![External grid](../../_static/external_grid.jpg)