Sometimes the relationship between the two programs is very close. But essentially on a Texas Method program you have two "heavy days" per week - once for volume and once for intensity. Most of the HLM programs I design for clients use a "top set + back offs" on the heavy day so there is a combination of both high intensity and relatively high volume on the heavy day. It might looks like this:
Heavy Day Squat: work up to 1 x 5, then 4x5 @ (-5%)
Light Day Squat: 3 x 5 @ (-20%)
Medium Day Squat: 4 x 5 @ (-10%)
Something like that.