How to export ground levels @5minterval to AUTOCAD
If ground levels refer to Grid Spacing, Pix4Dmapper allows you to choose various Grid Spacing values and Grid DSM export formats (XYZ also referred to as ASCII, LAS and LAZ) that enable your data to further be used in 3rd party software such as AutoCAD.
In order to modify the Grid Spacing, open the Processing Options > edit the Step 3. DSM, Orthomosaic and Index > open the Additional Outputs tab > customize the Grid Spacing :
The units for Grid Spacing in Pix4Dmapper are centimeters, so 5 meters=500 centimeters.
Hopefully that helps.