Brief presentation on the procedure for implementing T-tau relations extracted from 3D simulations into 1D stellar models. More specifically, how the T-tau relations from Trampedach et al. (2014, MNRAS, 442, 805) and variable mixing-length parameter from Trampedach et al. (2014, MNRAS, 445, 4366) have been implemented in the Garching Stellar Evolution Code (GARSTEC, see Weiss & Schlattl, 2008, Astrophys. Space Sci., 316, 99).