1)
Once on approach logic is satisfied: (generally: within 2 nm of decent point or below 2000`AAL) AND you are 300`below MAA you can reset the MCP altitude to the MAA. Then the A/C will then keep following the VNAV path until either you disconnect or it reaches 50`above RWY where it apparently will level off….(never quite had the balls to test the last one in real life)
2)
Or you can set the MCP altitude to your minimums round up to next higher 100`. The A/C will level off at set MCP altitude