I believe you wish to use DMR at Inspection lot level [PLKO-QDYNHEAD = 1].. is that correct?
1. I don't understand the term MMR. Please explain it so that I can understand at what level you have added the DMR.
2. OK. Have you also assigned 'Sampling Procedure' at header level too (I remember you needed it)?
3. You seems to have selected 'Manual Sample Calculation' in material master - QM view. If so, then you need to assign the inspection plan in QA02 manually, to change the Inspection lot status form CRTD to REL.
Some further inputs -
a) Before creating inspection lot, you need to create initial Quality level (Master data) in QDL1.
b) You need to do RR and then followed by UD in order to follow the Q-level process.