Hello Matt,
Are the services provided by the consulting faculty members clearly outlined as being separate from their regular duties as University employees? The line between consulting on the grant and operating in their normal role as a University employee should be very clear.
SPA does provide some guidance related to intra-university consulting.
Follow the provided link:
https://research.umn.edu/units/spa/proposals/proposal-development/intra-university-consulting-feesA non-recurring lump sum payment doesn't seem to be an applicable option for the consulting activity. I would follow the suggestion from the SPA page and check how this activity should be handled with Payroll Services.
We also suggest checking in with the relevant Grant Administrator about
the acceptability of the intra-university consulting activity on a sponsored project and the proper preparation of the contract for professional services.
Best,
CoP Committee