How to array a geometry in sketch?
 

There are many rectangles distributed on a plane, and I want to split the surface into small pieces with these recs. But I can not find any array tool in sketch environment. It would be really a tedious job to repeat the drawing and dimensioning. Could you know any hints to finish such kind of work?

Thanks for any suggestions.

Have not found any function could get this very quickly, but grid would help a little. However, only one dimension of the grid could be defined, i.e. it is inconvenient to draw a rect whose length is different from the width. Major grid and minor grid may work, but can not set the length to random values.