In the section Technical Steering Committee the rule for electing new voting member make reference to the charter which indicates also that the project may define their own rules.
seapath_governance.md
The Technical Steering Committee (TSC) is composed of voting members elected by the active Committers as described in the project’s Technical Charter. The TSC is responsible for the technical direction of the project.
seapath_charter.pdf

I would suggest to have the clear rule in SEAPATH governance document and not make reference to the charter:
The Technical Steering Committee (TSC) is composed of voting members elected by the active Committers among the active members. The TSC is responsible for the technical direction of the project.
In the section Technical Steering Committee the rule for electing new voting member make reference to the charter which indicates also that the project may define their own rules.
seapath_governance.mdThe Technical Steering Committee (TSC) is composed of voting members elected by the active Committers as described in the project’s Technical Charter. The TSC is responsible for the technical direction of the project.seapath_charter.pdfI would suggest to have the clear rule in SEAPATH governance document and not make reference to the charter:
The Technical Steering Committee (TSC) is composed of voting members elected by the active Committers among the active members. The TSC is responsible for the technical direction of the project.