As much as you want. As much as you need.
Practice with a native speaker
Switch between being a « learner » and a « teacher ».
Get 1 token for each « Teaching » session of 30 minutes you give in your own language.
Spend each token you got in 30-minute « practice » sessions with native speakers in the language you want to practice!
Speak with a non-native
Directly practice 30 minutes with another learner who wants to practice the same language as you.
No need for tokens in this mode.