MMCD does not have sample documents for “Supporting documentation", except those listed on the MMCD website.
MMCD does not have a subcontract template. Using the CCA-1 contract sounds like a good idea.
Sorry, there are no MMCD templates for subcontractors.
Article 4.4.6 in the Volume I User Guide discusses Force Account reporting. Daily report formats are often established at the pre-job meeting.