Radial profiles of diffusion coefficients (left axis) of meridional circulation (D_eff), vertical shear (D_v), parametric turbulence (D_T6.28), penetrative convection (D_A) and of the Li and He mass fractions (right axis) for the models with M = 0.74 M_⊙ ([Fe/H] = −2.0 and [α/Fe] = 0.3) with median, slow, and fast rotation as indicated, shown on the PMS (shortly after the core became radiative, age ≈ 1.3 Myr), at the ZAMS, and on the MS when the central hydrogen mass fraction X_C = 0.5X₀ and 0.1X₀, where X₀ is the initial H mass fraction (from left to right). The upper row corresponds to the model without additional parametric viscosity (ν_add = 0) and the other rows are for models computed with ν_add = 3.5 × 10⁴ cm² s⁻¹ and three initial rotation rates. The pinkish area corresponds to the convective envelope. For the PMS structure, we show the profiles down to the centre to demonstrate the initial (almost flat) behaviour of Li in the models.