41 CFR § 301-74.13
What policies and procedures must we establish to govern the selection of conference attendees?
June 9, 2020
You must establish policies that reduce the overall cost of conference attendance. The policies and procedures must:
(a) Limit your agency's representation to the minimum number of attendees determined by a senior official necessary to accomplish your agency's mission; and
(b) Provide for the consideration of travel expenses when selecting attendees.
[FTR Amdt. 89, 65 FR 1327, Jan. 10, 2000. Redesignated by FTR Amdt. 2013-01, 78 FR 65212, Oct. 31, 2013]