Grouping polygons that are part of fishnet using ArcGIS Desktop?

How do you divide a polygon into equal parts in ArcMap?

Select a feature with the Select Parcel Feature tool, right-click Parcel Division. You can divide by Equal Area or Equal Width. Please see the ESRI online help (parcel division). Save this answer.
 

How do I split a polygon into multiple polygons in Arcgis?

To split a polygon, use the Cut Polygons tool, then draw a line across the polygon. The cut operation updates the shape of the existing feature and creates one or more new features. If there is no domain assigned to a field, the attribute values are copied from the original feature to the new feature.

How do I combine multiple polygons into one?

Note:

1. Click the Edit tool. on the Editor toolbar.
2. Click the features you want to merge. The features must be from the same layer.
3. Click the Editor menu and click Merge.
4. Click the feature that the features will be merged into and will supply the attributes for the merged feature.
5. Click OK.