So for Bb you capo up three frets tune your fifth string to A#Bb and play as though you are in open G… It’s understandable that you might get lost further up the neck but in time and as you gain knowledge and experience you’ll find you go to these positions automictically.
Try this exercise. Choose a tune you know well in G and has an up the neck break. Capo up 1 fret to G# and tune the fifth string to G#/Ab now play the tune. Bet it sounds pretty good and feels fairly comfortable.
Now capo up one fret to A retune the fifth to A and play the same tune.
Now capo up one more fret to Bb retune the fifth to A#/Bb {Woah you’ll need a spike or 5th string capo otherwise you’ll snap a string} and repeat the exercise. Your now playing in Bb out of the G position.
Because your familiar with playing out of the G position your fretting hand will automatically locate itself over the Bb chord positions up the neck. You don’t have to think it through.