Warning (287001): Assertion warning: Device family MAX10 does not have MLAB blocks -- using available memory blocks

This warning means that Max 10 does not have MLAB blocks, it got only M9k blocks https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/max-10/m10_overview.pdf page 11.

You don't need to do anythings, Quartus will auto assign to other memory blocks since this device do not have MLAB blocks.