Document use of supplemental status for VBA

[swirtSJW]

Once the supplemental status approach is engineered, it will need to be documented for future engineers and members of the facility team.

ACs

• Documentation is added to the TEAM repo markdown describing the what and where.
• Content Model Documentation is created that describes the what and the where for Supplemental Status in general
• Content Model Documentation is created that describes the what and the where for VBA and links to the TEAM repo article.

[xiongjaneg]

Supplemental status isn't currently used in VBA