Can several faces be drilled and tapped in one clamping?
That can be reviewed as a project objective. The proposed tools, holders, supports and clamps must reach the required features without interference. Ask the layout to identify any reorientation or separate operation before confirming one-clamping coverage.
Will all machining heads run at the same time?
The agreed sequence determines which actions overlap. Tool access, shared space and feature dependencies can require separate steps. Request an operation map instead of deriving output from the number of heads.
Does a cross-hole application include deburring and leak testing?
Only where those functions are expressly included. Show internal intersections and the finished cleanliness, edge and test requirements. The proposal should identify what is performed in the machine and what remains a separate process.