Update usage.md - Added Advance Usage to Usage Section

Author: Aero-Spec

docs/src/usage.md

@@ -79,4 +79,16 @@ println("Optimal value found at: ", result)
 - `a`: A vector with the lower bounds to be used in the search space.
 - `b`: An upper-bound vector for the search space.
 - `max_iterations`:  Maximum number of iterations to run the optimization. The default is 100.
-- `min_radius`: The minimum allowable size of a hyper-rectangle (default: '1e-5').
+- `min_radius`: The minimum allowable size of a hyper-rectangle (default: '1e-5').
+
+## Advanced Usage
+### Fine-Tuning Optimization:
+The `optimize` function offers several parameters for fine-tuning the optimization process:
+
+- `max_iterations`: Sets the maximum number of iterations to perform. Increasing this value may improve the accuracy of the result but will require more computational time.
+- `min_radius`: Specifies the minimum allowable size of the hyper-rectangles. This can be adjusted to control the granularity of the search.
+Example with custom parameters:
+
+```julia
+result = DividedRectangles.optimize(f, a, b, max_iterations=500, min_radius=1e-6)
+```