Double multi res on one object

Hi guys is there any way to add two multi res on one object, one for Base and one for details

a single Multiresolution modifier already allows you to do this. You just sculpt at level 1 (or 0) for base , and the highest level (4 or 5) for the fine details. In the modifer there is a ‘Sculpt’ parameter, just lower or increase it ,while in sculpt mode, and the mesh will change to level of detail yo want.