Sportmask / training mask

I started using a training mask for running and cycling. The watch, on the other hand, uses standard altitude as a basis to calculate the different values.
I would like to have an adjustment option for the running/cycling activity adapted to the use of the training mask.
On a scale of 0-6, 0 corresponds to not using a mask, and 1-6 the watch adjusts to the settings of the mask and
would recalculate the training data based on this.