XDJ XZ zoom-grid

http://docs.pioneerdj.com/Manuals/XDJ_XZ_DRI1625B_manual/?_ga=2.152809273.1403385233.1584454979-1413769745.1522832376&page=72

Check No.28 ZOOM and GRID ADJUST Mode on page 72 of the manual.

However, you can switch to GRID MODE only when using songs on USB.
Switching is not possible when using Serato DJ Pro or rekordbox dj (performanceMode).