Artemis 3 is going to land on the Moon's south pole, on the far side of the Moon. Therefore, before launching the crew to the Moon, NASA must put (a) communication satellite(s) either into lunar orbit or to some Lagrangian point. Are there some more concrete plans on how to maintain communication with Houston from the lunar south pole?
In the original draw, Artemis 3 would have docked to the "Lunar Gateway" (or a smaller replacement) from where the Lander would be deployed. Lunar Gateway would be on a highly elliptical seven-day moon orbit (Wiki Lunar Gateway, Orbit). Such an orbit would have most of its time an access to the lunar south pole. Artemis 3 on the other side is only scheduled to stay on moon for 6.5 days (Wiki Artemis 3, Mission).
By early 2020, plans for Orion and the HLS to rendezvous with the Gateway were abandoned in favour of a solo demonstration of Orion and HLS, and development of the Gateway independent of the Artemis program.
This is just a problem, if someone plans to put the Artemis 3 Orbiter in a complete different orbit.
On the other hand a relay satellite near a Lagrange-Point would not help, it could not see a pole (at least not with a sufficient elevation) and a set of satellites in low-lunar-orbit would have a problem keeping a "stable" orbit (as every object in a low lunar orbit).
For my own curiosity I checked the orbit in STK: Assuming a kelperian Orbit, 3000 km Peri..Periluna?..Periselene?... Pericenter above moons north pole and a 70000 km Apocenter above moons south pole I get an Orbit Period of about 7d 19.5h. Time with no access to the south pole: about 6h.